Carl Sagan (English Wikipedia)

Terzian & Trimble 1997, Article in Bull AAS 29(4). Terzian, Yervant; Trimble, Virginia (January 1, 1997). "Carl Sagan (1934–1996)". Bulletin of the AAS. 29 (4).

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"Carl Sagan". Internet Accuracy Project. Grandville, Michigan. Archived from the original on March 8, 2012. Retrieved August 22, 2012.

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"Golden Plate Awardees of the American Academy of Achievement". achievement.org. American Academy of Achievement. Archived from the original on December 15, 2016. Retrieved May 21, 2020.

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"From the AHA archives: Carl Sagan's 1981 Humanist of the year speech". americanhumanist.org. Archived from the original on December 26, 2014. Retrieved December 25, 2014.

americanscientist.org

Impey, Chris (January–February 2000). "Carl Sagan, Carl Sagan: Biographies Echo an Extraordinary Life". American Scientist (Book review). 88 (1). ISSN 0003-0996. Archived from the original on May 16, 2013. Retrieved March 10, 2013.

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"American Philosophical Society Member History". Philadelphia, PA: American Philosophical Society. Archived from the original on November 13, 2013. Retrieved September 3, 2013.

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Davidson, Keay (2000). "Sagan, Carl (1934–1996), space scientist, author, science popularizer, TV personality, and antinuclear weapons activist". American National Biography. Oxford University Press. doi:10.1093/anb/9780198606697.article.1302612. ISBN 978-0-19-860669-7. Archived from the original on May 14, 2021. Retrieved June 23, 2021.

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"STAR COUNT: ANU ASTRONOMER MAKES BEST YET". Sydney, Australia: Australian National University Media Releases. July 17, 2003. Archived from the original on March 9, 2011. Retrieved October 27, 2015.

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"APS Fellow Archive". APS. Archived from the original on October 7, 2020. Retrieved October 5, 2020.

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Davidson 1999, The book is dedicated to Pollack. Davidson, Keay (1999). Carl Sagan: A Life. New York: John Wiley & Sons. ISBN 978-0-471-25286-3. LCCN 99036206. OCLC 41580617.
Sagan, Carl; Head, Tom (2006). Conversations with Carl Sagan (illustrated ed.). University Press of Mississippi. p. 14. ISBN 978-1-57806-736-7. Extract of page 14 Archived December 3, 2016, at the Wayback Machine
Poundstone 1999, pp. 363–364, 374–375. Poundstone, William (1999). Carl Sagan: A Life in the Cosmos. New York: Henry Holt and Company. ISBN 978-0-8050-5766-9. LCCN 99014615. OCLC 40979822.
Davidson 1999. Davidson, Keay (1999). Carl Sagan: A Life. New York: John Wiley & Sons. ISBN 978-0-471-25286-3. LCCN 99036206. OCLC 41580617.
Davidson 1999, p. 12. Davidson, Keay (1999). Carl Sagan: A Life. New York: John Wiley & Sons. ISBN 978-0-471-25286-3. LCCN 99036206. OCLC 41580617.
Davidson 1999, p. 2. Davidson, Keay (1999). Carl Sagan: A Life. New York: John Wiley & Sons. ISBN 978-0-471-25286-3. LCCN 99036206. OCLC 41580617.
Davidson 1999, p. 9. Davidson, Keay (1999). Carl Sagan: A Life. New York: John Wiley & Sons. ISBN 978-0-471-25286-3. LCCN 99036206. OCLC 41580617.
Davidson 1999, p. 14. Davidson, Keay (1999). Carl Sagan: A Life. New York: John Wiley & Sons. ISBN 978-0-471-25286-3. LCCN 99036206. OCLC 41580617.
Davidson 1999, p. 15. Davidson, Keay (1999). Carl Sagan: A Life. New York: John Wiley & Sons. ISBN 978-0-471-25286-3. LCCN 99036206. OCLC 41580617.
Davidson 1999, p. 18. Davidson, Keay (1999). Carl Sagan: A Life. New York: John Wiley & Sons. ISBN 978-0-471-25286-3. LCCN 99036206. OCLC 41580617.
Davidson 1999, p. 23. Davidson, Keay (1999). Carl Sagan: A Life. New York: John Wiley & Sons. ISBN 978-0-471-25286-3. LCCN 99036206. OCLC 41580617.
Davidson 1999, p. 24. Davidson, Keay (1999). Carl Sagan: A Life. New York: John Wiley & Sons. ISBN 978-0-471-25286-3. LCCN 99036206. OCLC 41580617.
Davidson 1999, p. 25. Davidson, Keay (1999). Carl Sagan: A Life. New York: John Wiley & Sons. ISBN 978-0-471-25286-3. LCCN 99036206. OCLC 41580617.
Poundstone 1999, p. 15. Poundstone, William (1999). Carl Sagan: A Life in the Cosmos. New York: Henry Holt and Company. ISBN 978-0-8050-5766-9. LCCN 99014615. OCLC 40979822.
Poundstone 1999, p. 14. Poundstone, William (1999). Carl Sagan: A Life in the Cosmos. New York: Henry Holt and Company. ISBN 978-0-8050-5766-9. LCCN 99014615. OCLC 40979822.
Davidson 1999, p. 138. Davidson, Keay (1999). Carl Sagan: A Life. New York: John Wiley & Sons. ISBN 978-0-471-25286-3. LCCN 99036206. OCLC 41580617.
Davidson 1999, p. 204. Davidson, Keay (1999). Carl Sagan: A Life. New York: John Wiley & Sons. ISBN 978-0-471-25286-3. LCCN 99036206. OCLC 41580617.
Davidson 1999, p. 213. Davidson, Keay (1999). Carl Sagan: A Life. New York: John Wiley & Sons. ISBN 978-0-471-25286-3. LCCN 99036206. OCLC 41580617.
Sagan, Carl; Head, Tom (2006). Conversations with Carl Sagan (illustrated ed.). Univ. Press of Mississippi. p. xxi. ISBN 978-1-57806-736-7. Extract of page xxi Archived December 23, 2019, at the Wayback Machine.
Shapiro, Fred R., ed. (2006). The Yale Book of Quotations. Foreword by Joseph Epstein. New Haven, CT: Yale University Press. p. 660. ISBN 978-0-300-10798-2. LCCN 2006012317. OCLC 66527213.
Sagan, Carl (1985). Cosmos. Balantine Books. p. 3. ISBN 0345331354.
Davidson 1999, p. 202. Davidson, Keay (1999). Carl Sagan: A Life. New York: John Wiley & Sons. ISBN 978-0-471-25286-3. LCCN 99036206. OCLC 41580617.
Davidson 1999, p. 227. Davidson, Keay (1999). Carl Sagan: A Life. New York: John Wiley & Sons. ISBN 978-0-471-25286-3. LCCN 99036206. OCLC 41580617.
Davidson 1999, p. 341. Davidson, Keay (1999). Carl Sagan: A Life. New York: John Wiley & Sons. ISBN 978-0-471-25286-3. LCCN 99036206. OCLC 41580617.
Davidson 1999, p. 203. Davidson, Keay (1999). Carl Sagan: A Life. New York: John Wiley & Sons. ISBN 978-0-471-25286-3. LCCN 99036206. OCLC 41580617.
Davidson 1999, p. 297. Davidson, Keay (1999). Carl Sagan: A Life. New York: John Wiley & Sons. ISBN 978-0-471-25286-3. LCCN 99036206. OCLC 41580617.
Poundstone 1999, p. 364 Poundstone, William (1999). Carl Sagan: A Life in the Cosmos. New York: Henry Holt and Company. ISBN 978-0-8050-5766-9. LCCN 99014615. OCLC 40979822.
Poundstone 1999, pp. 374–375 Poundstone, William (1999). Carl Sagan: A Life in the Cosmos. New York: Henry Holt and Company. ISBN 978-0-8050-5766-9. LCCN 99014615. OCLC 40979822.
Asimov, Isaac (1981) [Originally published 1980; Garden City, NY: Doubleday]. In Joy Still Felt: The Autobiography of Isaac Asimov, 1954–1978. New York: Avon. pp. 217, 302. ISBN 978-0-380-53025-0. LCCN 79003685. OCLC 7880716.
Sagan, Carl (1980) [Originally published 1979]. Broca's Brain: Reflections on the Romance of Science (Reprint ed.). New York: Ballantine Books. p. 330. ISBN 978-0-345-33689-7. LCCN 78021810. OCLC 428008204.
Grinspoon, Lester (1994) [2nd ed. published 1977; Cambridge, MA: Harvard University Press]. Marihuana Reconsidered. New introduction by author (2nd (reprint) ed.). Oakland, CA: Quick American Archives. ISBN 978-0-932551-13-9. LCCN 77076767. OCLC 32410025.
Davidson 1999, pp. 51–52. Davidson, Keay (1999). Carl Sagan: A Life. New York: John Wiley & Sons. ISBN 978-0-471-25286-3. LCCN 99036206. OCLC 41580617.
Westrum, Ron (2000). "Limited Access: Six Natural Scientists and the UFO Phenomenon". In Jacobs, David M. (ed.). UFOs and Abductions: Challenging the Borders of Knowledge. Lawrence, KS: University Press of Kansas. pp. 31–55. ISBN 978-0-7006-1032-7. LCCN 00028970. OCLC 43615835.
Appelle, Stuart (2000). "Ufology and Academia: The UFO Phenomenon as a Scholarly Discipline". In Jacobs, David M. (ed.). UFOs and Abductions: Challenging the Borders of Knowledge. Lawrence, KS: University Press of Kansas. pp. 7–30. ISBN 978-0-7006-1032-7. LCCN 00028970. OCLC 43615835.
Davidson 1999, p. 168. Davidson, Keay (1999). Carl Sagan: A Life. New York: John Wiley & Sons. ISBN 978-0-471-25286-3. LCCN 99036206. OCLC 41580617.
David Jacobs. "The UFO Controversy In America" (1987), p. 122–124.

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Whitehouse, David (October 15, 1999). "Carl Sagan: A life in the cosmos". BBC News. Archived from the original on July 25, 2014. Retrieved August 30, 2013.

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"Happy (Belated) Birthday Carl!". University of California, Berkeley The Berkeley Science Review. November 11, 2013. Archived from the original on December 3, 2013. Retrieved December 1, 2013.

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Sagan, Carl; Head, Tom (2006). Conversations with Carl Sagan (illustrated ed.). University Press of Mississippi. p. 14. ISBN 978-1-57806-736-7. Extract of page 14 Archived December 3, 2016, at the Wayback Machine
Sic. See Spangenburg, Ray; Moser, Kit; Moser, Diane (2004). Carl Sagan: A Biography (illustrated ed.). Greenwood Publishing Group. p. 28. ISBN 978-0-313-32265-5. Archived from the original on December 6, 2021. Retrieved August 31, 2018 – via Google Books.
Ulivi, Paolo (April 6, 2004). Lunar Exploration: Human Pioneers and Robotic Surveyors. Springer Science & Business Media. ISBN 978-1-85233-746-9. Archived from the original on January 1, 2014. Retrieved April 15, 2016 – via Google Books.
Sagan, Carl (1996). Demon-Haunted World: Science as a Candle in the Dark. Ballantine Books. p. 25. ISBN 978-0-307-80104-3. Archived from the original on October 3, 2022 – via Google Books.
Sagan, Carl; Head, Tom (2006). Conversations with Carl Sagan (illustrated ed.). Univ. Press of Mississippi. p. xxi. ISBN 978-1-57806-736-7. Extract of page xxi Archived December 23, 2019, at the Wayback Machine.
Pierrehumbert, Raymond T. (2010). Principles of Planetary Climate. Cambridge University Press. p. 202. ISBN 978-1-139-49506-6. Archived from the original on July 30, 2019. Retrieved March 20, 2016 – via Google Books. Extract of page 202 Archived December 19, 2019, at the Wayback Machine.
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Morris, Julian (2000). Rethinking Risk and the Precautionary Principle. Butterworth-Heinemann. p. 116. ISBN 978-0-08-051623-3. Archived from the original on December 20, 2019 – via Google Books..
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Head 2006, p. 70 Archived September 21, 2014, at the Wayback Machine Head, Tom, ed. (2006). Conversations with Carl Sagan (1st ed.). Jackson, MS: University Press of Mississippi. ISBN 978-1-57806-736-7. LCCN 2005048747. OCLC 60375648.
Flournoy, Théodore (1983) [Originally published 1899; Geneva: Édition Atar]. Des Indes à la Planète Mars: Étude sur un cas de Somnambulisme avec Glossolalie [From India to the Planet Mars: A Study of a Case of Somnambulism with Glossolalia] (in French). Introduction by Hélène Boursinhac; translation by Daniel B. Vermilye (Reprint ed.). Geneva: Éditions Slatkine. pp. 344–345. ISBN 978-2-05-100499-2. OCLC 11558608. Archived from the original on December 26, 2019. Retrieved February 24, 2018 – via Google Books.
Sagan, Carl (2000) [Originally published 1973]. "'Hello, Central Casting? Send Me Twenty Extraterrestrials'". Carl Sagan's Cosmic Connection: An Extraterrestrial Perspective. Produced by Jerome Agel; new contributions by Freeman Dyson, Ann Druyan, and David Morrison (2nd ed.). Cambridge; New York: Cambridge University Press. p. 183. ISBN 978-0-521-78303-3. LCCN 00020378. OCLC 460747781. Archived from the original on January 4, 2017. Retrieved February 28, 2016 – via Google Books.

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Quarles, Norma (December 20, 1996). "Carl Sagan dies at 62". CNN. Archived from the original on March 11, 2010. Retrieved December 5, 2011. Sagan was a noted astronomer whose lifelong passion was searching for intelligent life in the cosmos.

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Much of Sagan's research in the field of planetary science is outlined by William Poundstone. Poundstone's biography of Sagan includes an 8-page list of Sagan's scientific articles published from 1957 to 1998. Detailed information about Sagan's scientific work comes from the primary research articles. Example: Sagan, C.; Thompson, W. R.; Khare, B. N. (1992). "Titan: A Laboratory for Prebiological Organic Chemistry". Accounts of Chemical Research. 25 (7): 286–292. doi:10.1021/ar00019a003. PMID 11537156. There is commentary on this research article about Titan at David J. Darling's The Encyclopedia of Science Archived March 10, 2005, at the Wayback Machine.

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Davidson, Keay (2000). "Sagan, Carl (1934–1996), space scientist, author, science popularizer, TV personality, and antinuclear weapons activist". American National Biography. Oxford University Press. doi:10.1093/anb/9780198606697.article.1302612. ISBN 978-0-19-860669-7. Archived from the original on May 14, 2021. Retrieved June 23, 2021.
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Much of Sagan's research in the field of planetary science is outlined by William Poundstone. Poundstone's biography of Sagan includes an 8-page list of Sagan's scientific articles published from 1957 to 1998. Detailed information about Sagan's scientific work comes from the primary research articles. Example: Sagan, C.; Thompson, W. R.; Khare, B. N. (1992). "Titan: A Laboratory for Prebiological Organic Chemistry". Accounts of Chemical Research. 25 (7): 286–292. doi:10.1021/ar00019a003. PMID 11537156. There is commentary on this research article about Titan at David J. Darling's The Encyclopedia of Science Archived March 10, 2005, at the Wayback Machine.
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Turco, R. P.; Toon, O. B.; Ackerman, T. P.; Pollack, J. B.; Sagan, C. (January 12, 1990). "Climate and smoke: an appraisal of nuclear winter". Science. 247 (4939): 166–176. Bibcode:1990Sci...247..166T. CiteSeerX 10.1.1.584.8478. doi:10.1126/science.11538069. PMID 11538069. JSTOR Archived September 17, 2018, at the Wayback Machine link to full text article. Carl Sagan discussed his involvement in the political nuclear winter debates and his erroneous global cooling prediction for the Gulf War fires in his book The Demon-Haunted World.
Sagan, Carl (1990). "Guest Comment: Preserving and cherishing the Earth—An appeal for joint commitment in science and religion". American Journal of Physics. 58 (7). American Association of Physics Teachers (AAPT): 615–617. Bibcode:1990AmJPh..58..615S. doi:10.1119/1.16418. ISSN 0002-9505. Archived from the original on January 26, 2021. Retrieved April 23, 2022.

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Turco, R. P.; Toon, O. B.; Ackerman, T. P.; Pollack, J. B.; Sagan, C. (January 12, 1990). "Climate and smoke: an appraisal of nuclear winter". Science. 247 (4939): 166–176. Bibcode:1990Sci...247..166T. CiteSeerX 10.1.1.584.8478. doi:10.1126/science.11538069. PMID 11538069. JSTOR Archived September 17, 2018, at the Wayback Machine link to full text article. Carl Sagan discussed his involvement in the political nuclear winter debates and his erroneous global cooling prediction for the Gulf War fires in his book The Demon-Haunted World.
Sagan, Carl; Ostro, Steven J. (Summer 1994). "Long-Range Consequences of Interplanetary Collisions" (PDF). Issues in Science and Technology. 10 (4): 67–72. Bibcode:1994IST....10...67S. ISSN 0748-5492. Archived from the original (PDF) on December 3, 2013. Retrieved August 31, 2013.
Sagan, Carl (1990). "Guest Comment: Preserving and cherishing the Earth—An appeal for joint commitment in science and religion". American Journal of Physics. 58 (7). American Association of Physics Teachers (AAPT): 615–617. Bibcode:1990AmJPh..58..615S. doi:10.1119/1.16418. ISSN 0002-9505. Archived from the original on January 26, 2021. Retrieved April 23, 2022.

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Turco, R. P.; Toon, O. B.; Ackerman, T. P.; Pollack, J. B.; Sagan, C. (January 12, 1990). "Climate and smoke: an appraisal of nuclear winter". Science. 247 (4939): 166–176. Bibcode:1990Sci...247..166T. CiteSeerX 10.1.1.584.8478. doi:10.1126/science.11538069. PMID 11538069. JSTOR Archived September 17, 2018, at the Wayback Machine link to full text article. Carl Sagan discussed his involvement in the political nuclear winter debates and his erroneous global cooling prediction for the Gulf War fires in his book The Demon-Haunted World.

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Davidson 1999, The book is dedicated to Pollack. Davidson, Keay (1999). Carl Sagan: A Life. New York: John Wiley & Sons. ISBN 978-0-471-25286-3. LCCN 99036206. OCLC 41580617.
Poundstone 1999, pp. 363–364, 374–375. Poundstone, William (1999). Carl Sagan: A Life in the Cosmos. New York: Henry Holt and Company. ISBN 978-0-8050-5766-9. LCCN 99014615. OCLC 40979822.
Davidson 1999. Davidson, Keay (1999). Carl Sagan: A Life. New York: John Wiley & Sons. ISBN 978-0-471-25286-3. LCCN 99036206. OCLC 41580617.
Davidson 1999, p. 12. Davidson, Keay (1999). Carl Sagan: A Life. New York: John Wiley & Sons. ISBN 978-0-471-25286-3. LCCN 99036206. OCLC 41580617.
Davidson 1999, p. 2. Davidson, Keay (1999). Carl Sagan: A Life. New York: John Wiley & Sons. ISBN 978-0-471-25286-3. LCCN 99036206. OCLC 41580617.
Davidson 1999, p. 9. Davidson, Keay (1999). Carl Sagan: A Life. New York: John Wiley & Sons. ISBN 978-0-471-25286-3. LCCN 99036206. OCLC 41580617.
Spangenburg & Moser 2004, pp. 2–5. Spangenburg, Ray; Moser, Kit (2004). Carl Sagan: A Biography. Westport, CT: Greenwood Publishing Group. ISBN 978-0-313-32265-5. LCCN 2004015176. OCLC 55846272.
Davidson 1999, p. 14. Davidson, Keay (1999). Carl Sagan: A Life. New York: John Wiley & Sons. ISBN 978-0-471-25286-3. LCCN 99036206. OCLC 41580617.
Davidson 1999, p. 15. Davidson, Keay (1999). Carl Sagan: A Life. New York: John Wiley & Sons. ISBN 978-0-471-25286-3. LCCN 99036206. OCLC 41580617.
Davidson 1999, p. 18. Davidson, Keay (1999). Carl Sagan: A Life. New York: John Wiley & Sons. ISBN 978-0-471-25286-3. LCCN 99036206. OCLC 41580617.
Davidson 1999, p. 23. Davidson, Keay (1999). Carl Sagan: A Life. New York: John Wiley & Sons. ISBN 978-0-471-25286-3. LCCN 99036206. OCLC 41580617.
Davidson 1999, p. 24. Davidson, Keay (1999). Carl Sagan: A Life. New York: John Wiley & Sons. ISBN 978-0-471-25286-3. LCCN 99036206. OCLC 41580617.
Davidson 1999, p. 25. Davidson, Keay (1999). Carl Sagan: A Life. New York: John Wiley & Sons. ISBN 978-0-471-25286-3. LCCN 99036206. OCLC 41580617.
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search.worldcat.org

Davidson 1999, The book is dedicated to Pollack. Davidson, Keay (1999). Carl Sagan: A Life. New York: John Wiley & Sons. ISBN 978-0-471-25286-3. LCCN 99036206. OCLC 41580617.
Poundstone 1999, pp. 363–364, 374–375. Poundstone, William (1999). Carl Sagan: A Life in the Cosmos. New York: Henry Holt and Company. ISBN 978-0-8050-5766-9. LCCN 99014615. OCLC 40979822.
Davidson 1999. Davidson, Keay (1999). Carl Sagan: A Life. New York: John Wiley & Sons. ISBN 978-0-471-25286-3. LCCN 99036206. OCLC 41580617.
Davidson 1999, p. 12. Davidson, Keay (1999). Carl Sagan: A Life. New York: John Wiley & Sons. ISBN 978-0-471-25286-3. LCCN 99036206. OCLC 41580617.
Davidson 1999, p. 2. Davidson, Keay (1999). Carl Sagan: A Life. New York: John Wiley & Sons. ISBN 978-0-471-25286-3. LCCN 99036206. OCLC 41580617.
Davidson 1999, p. 9. Davidson, Keay (1999). Carl Sagan: A Life. New York: John Wiley & Sons. ISBN 978-0-471-25286-3. LCCN 99036206. OCLC 41580617.
Spangenburg & Moser 2004, pp. 2–5. Spangenburg, Ray; Moser, Kit (2004). Carl Sagan: A Biography. Westport, CT: Greenwood Publishing Group. ISBN 978-0-313-32265-5. LCCN 2004015176. OCLC 55846272.
Davidson 1999, p. 14. Davidson, Keay (1999). Carl Sagan: A Life. New York: John Wiley & Sons. ISBN 978-0-471-25286-3. LCCN 99036206. OCLC 41580617.
Davidson 1999, p. 15. Davidson, Keay (1999). Carl Sagan: A Life. New York: John Wiley & Sons. ISBN 978-0-471-25286-3. LCCN 99036206. OCLC 41580617.
Davidson 1999, p. 18. Davidson, Keay (1999). Carl Sagan: A Life. New York: John Wiley & Sons. ISBN 978-0-471-25286-3. LCCN 99036206. OCLC 41580617.
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Davidson 1999, p. 24. Davidson, Keay (1999). Carl Sagan: A Life. New York: John Wiley & Sons. ISBN 978-0-471-25286-3. LCCN 99036206. OCLC 41580617.
Davidson 1999, p. 25. Davidson, Keay (1999). Carl Sagan: A Life. New York: John Wiley & Sons. ISBN 978-0-471-25286-3. LCCN 99036206. OCLC 41580617.
Poundstone 1999, p. 15. Poundstone, William (1999). Carl Sagan: A Life in the Cosmos. New York: Henry Holt and Company. ISBN 978-0-8050-5766-9. LCCN 99014615. OCLC 40979822.
Poundstone 1999, p. 14. Poundstone, William (1999). Carl Sagan: A Life in the Cosmos. New York: Henry Holt and Company. ISBN 978-0-8050-5766-9. LCCN 99014615. OCLC 40979822.
Sagan, Carl (1960). Physical Studies of the Planets (PhD thesis). University of Chicago. p. ii. OCLC 20678107. ProQuest 301918122. A thesis in four parts submitted in partial fulfillment of the requirements for the degree of Doctor of Philosophy in the Department of Astronomy, University of Chicago, June, 1960
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Spangenburg & Moser 2004, p. 28. Spangenburg, Ray; Moser, Kit (2004). Carl Sagan: A Biography. Westport, CT: Greenwood Publishing Group. ISBN 978-0-313-32265-5. LCCN 2004015176. OCLC 55846272.
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Davidson 1999, p. 204. Davidson, Keay (1999). Carl Sagan: A Life. New York: John Wiley & Sons. ISBN 978-0-471-25286-3. LCCN 99036206. OCLC 41580617.
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Sagan, Carl; Ostro, Steven J. (Summer 1994). "Long-Range Consequences of Interplanetary Collisions" (PDF). Issues in Science and Technology. 10 (4): 67–72. Bibcode:1994IST....10...67S. ISSN 0748-5492. Archived from the original (PDF) on December 3, 2013. Retrieved August 31, 2013.
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Davidson 1999, p. 203. Davidson, Keay (1999). Carl Sagan: A Life. New York: John Wiley & Sons. ISBN 978-0-471-25286-3. LCCN 99036206. OCLC 41580617.
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Spangenburg & Moser 2004, p. 106. Spangenburg, Ray; Moser, Kit (2004). Carl Sagan: A Biography. Westport, CT: Greenwood Publishing Group. ISBN 978-0-313-32265-5. LCCN 2004015176. OCLC 55846272.
Poundstone 1999, p. 364 Poundstone, William (1999). Carl Sagan: A Life in the Cosmos. New York: Henry Holt and Company. ISBN 978-0-8050-5766-9. LCCN 99014615. OCLC 40979822.
Poundstone 1999, pp. 374–375 Poundstone, William (1999). Carl Sagan: A Life in the Cosmos. New York: Henry Holt and Company. ISBN 978-0-8050-5766-9. LCCN 99014615. OCLC 40979822.
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Head 2006, p. 70 Archived September 21, 2014, at the Wayback Machine Head, Tom, ed. (2006). Conversations with Carl Sagan (1st ed.). Jackson, MS: University Press of Mississippi. ISBN 978-1-57806-736-7. LCCN 2005048747. OCLC 60375648.
Sagan, Carl (1990). "Guest Comment: Preserving and cherishing the Earth—An appeal for joint commitment in science and religion". American Journal of Physics. 58 (7). American Association of Physics Teachers (AAPT): 615–617. Bibcode:1990AmJPh..58..615S. doi:10.1119/1.16418. ISSN 0002-9505. Archived from the original on January 26, 2021. Retrieved April 23, 2022.
Head, Tom (1997). "Conversations with Carl". Skeptic. 13 (1): 32–38. Excerpted in Head 2006 Head, Tom, ed. (2006). Conversations with Carl Sagan (1st ed.). Jackson, MS: University Press of Mississippi. ISBN 978-1-57806-736-7. LCCN 2005048747. OCLC 60375648.
Sagan, Carl (1997) [Originally published 1995]. The Demon-Haunted World: Science as a Candle in the Dark (1st Ballantine Books ed.). New York: Ballantine Books. p. 278. ISBN 978-0-345-40946-1. LCCN 95034076. OCLC 36504316.
Druyan, Ann (November–December 2003). "Ann Druyan Talks About Science, Religion, Wonder, Awe ... and Carl Sagan". Skeptical Inquirer. 27 (6). ISSN 0194-6730. Archived from the original on August 10, 2010. Retrieved July 27, 2010.
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Sagan 1995, pp. 81–96, 99–104 —— (1995). The Demon-Haunted World: Science as a Candle in the Dark (1st ed.). New York: Random House. ISBN 978-0-394-53512-8. LCCN 95034076. OCLC 779687822. (Note: errata slip inserted.)
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Sagan, Carl (2000) [Originally published 1973]. "'Hello, Central Casting? Send Me Twenty Extraterrestrials'". Carl Sagan's Cosmic Connection: An Extraterrestrial Perspective. Produced by Jerome Agel; new contributions by Freeman Dyson, Ann Druyan, and David Morrison (2nd ed.). Cambridge; New York: Cambridge University Press. p. 183. ISBN 978-0-521-78303-3. LCCN 00020378. OCLC 460747781. Archived from the original on January 4, 2017. Retrieved February 28, 2016 – via Google Books.

youtube.com

Sagan, Carl (January 5, 1995). "An Interview with Carl Sagan". Charlie Rose (Interview). PBS. Archived from the original on July 14, 2015. Retrieved August 30, 2013.
24fpsfan (December 22, 2012). Carl Sagan (Cosmos) Parody by Johnny Carson (1980). Archived from the original on October 23, 2016. Retrieved November 4, 2016 – via YouTube.
Sagan, Carl. Recorded lecture at Cornell in 1994 Archived November 9, 2017, at the Wayback Machine, from Pale Blue Dot: A Vision of the Human Future in Space, Ballantine Books (reprint) (1997) p. 88.
How to Reduce the Risk of Nuclear Warfare: Carl Sagan on Space Exploration (1986). Archived from the original on July 11, 2015 – via YouTube.
"Ted Turner Asks Carl Sagan If He Is a Socialist". March 14, 2016. Archived from the original on November 24, 2021 – via YouTube.
Boswell, John (November 9, 2009). A Glorious Dawn (7-in (17.5 cm) gramophone record). Nashville, TN: Third Man Records. Archived from the original on November 24, 2021. Retrieved September 3, 2013.