Michael Szpir. "Perturbing the Oort Cloud". American Scientist. The Scientific Research Society. Archived from the original on 21 February 2017. Retrieved 25 March 2008.
archive.org
Coe's initial date was "24 December 2011". He revised it to "11 January AD 2013" in the 1980 2nd edition of his book,[30] not settling on 23 December 2012 until the 1984 3rd edition.[31] The correlation of bʼakʼtun 13 as 21 December 2012 first appeared in Table B.2 of Robert J. Sharer's 1983 revision of the 4th edition of Sylvanus Morley's book The Ancient Maya. There is an arise in the theory that 2012 resulted in a Consciousness Shift. (Morley 1983, p. 603, Table B2). Morley, Sylvanus (1983). The Ancient Maya (4th ed.). Palo Alto, CA: Stanford University Press. ISBN978-0-8047-1288-0.
Coe 1980, p. 151. Coe, Michael D. (1980). The Maya. Ancient peoples and places series, no. 10 (2nd ed.). London: Thames and Hudson. ISBN978-0-500-05061-3.
Coe 1984. This correlation, which differs two days from Sharer's, is repeated in subsequent editions of Coe's book. Coe, Michael D. (1984). The Maya. Ancient peoples and places series (3rd ed.). London: Thames and Hudson. ISBN978-0-500-05061-3.
"2012 Apocalypse". The Discovery Channel. 2009. Archived from the original on 11 November 2009. Retrieved 8 November 2009.
doi.org
Robert K. Sitler (February 2006). "The 2012 Phenomenon: New Age Appropriation of an Ancient Mayan Calendar". Nova Religio: The Journal of Alternative and Emergent Religions. 9 (3): 24–38. doi:10.1525/nr.2006.9.3.024. ISSN1092-6690. OCLC357082680.
Andrew K. Scherer (2007). "Population structure of the classic period Maya". American Journal of Physical Anthropology. 132 (3): 367–380. doi:10.1002/ajpa.20535. PMID17205548.
Severin 1981, p. 75. Severin, Gregory M. (1981). "The Paris Codex: Decoding an Astronomical Ephemeris". Transactions of the American Philosophical Society. 71 (5): 1–101. doi:10.2307/1006397. JSTOR1006397.
Dunn, Emily (November 2016). "Reincarnated Religion? The Eschatology of the Church of Almighty God in Comparative Perspective". Studies in World Christianity. 22 (3): 216–233. doi:10.3366/swc.2016.0157.
Gustavo Banegas (22 December 2012). "Turistas invaden Copán Ruinas en cierre del 13 baktun" [Tourists invade the Copan Ruins for the end of the baktun 13]. El Heraldo (Tegucigalpa) (in Spanish). Retrieved 22 December 2012.
Makemson 1957, p. 4 Makemson, Maude Worcester (June 1957). "The miscellaneous dates of the Dresden Codex". Publications of the Vassar College Observatory. 6: i. Bibcode:1957PVasO...6....1M.
Connor, Steve (17 October 2009). "Relax, the end isn't nigh". The Independent. London. Archived from the original on 20 October 2009. Retrieved 20 October 2009.
Severin 1981, p. 75. Severin, Gregory M. (1981). "The Paris Codex: Decoding an Astronomical Ephemeris". Transactions of the American Philosophical Society. 71 (5): 1–101. doi:10.2307/1006397. JSTOR1006397.
Andrew K. Scherer (2007). "Population structure of the classic period Maya". American Journal of Physical Anthropology. 132 (3): 367–380. doi:10.1002/ajpa.20535. PMID17205548.
Michael Szpir. "Perturbing the Oort Cloud". American Scientist. The Scientific Research Society. Archived from the original on 21 February 2017. Retrieved 25 March 2008.
Connor, Steve (17 October 2009). "Relax, the end isn't nigh". The Independent. London. Archived from the original on 20 October 2009. Retrieved 20 October 2009.
Robert K. Sitler (February 2006). "The 2012 Phenomenon: New Age Appropriation of an Ancient Mayan Calendar". Nova Religio: The Journal of Alternative and Emergent Religions. 9 (3): 24–38. doi:10.1525/nr.2006.9.3.024. ISSN1092-6690. OCLC357082680.
Milbrath 1999, p. 4 Milbrath, Susan (1999). Star Gods of the Maya: Astronomy in Art, Folklore, and Calendars. The Linda Schele series in Maya and pre-Columbian studies. Austin: University of Texas Press. ISBN978-0-292-75225-2. OCLC40848420.
Schele 1992, pp. 93–95. Schele, Linda (1992). "A New Look at the Dynastic History of Palenque". In Victoria R. Bricker (Volume), with Patricia A. Andrews (ed.). Supplement to the Handbook of Middle American Indians, Vol. 5: Epigraphy. Austin: University of Texas Press. pp. 82–109. ISBN978-0-292-77650-0. OCLC23693597.
See in particular, chapter 6 ("The Great Cycle: Its Projected Beginning"), chapter 7 ("The Great Cycle – Its Projected End") and the Appendix, in Waters 1975, pp. 256–264, 265–271, 285 Waters, Frank (1975). Mexico Mystique: The Coming Sixth World of Consciousness. Chicago, Illinois: Sage Books/Swallow Press. ISBN978-0-8040-0663-7. OCLC1364766.