Graham, Alister W. (2008). “Populating the Galaxy Velocity Dispersion: Supermassive Black Hole Mass Diagram, A Catalogue of ( M bh , σ) Values”. Publications of the Astronomical Society of Australia25 (4): 167–175. Bibcode: 2008PASA...25..167G. doi:10.1071/AS08013. ISSN1323-3580.
Dekker, Elly (1987). “On the Dispersal of Knowledge of the Southern Celestial Sky / ZUR VERBREITUNG VON WISSEN ÜBER DEN SÜDLICHEN STERNENHIMMEL”. Der Globusfreund (International Coronelli Society for the Study of Globes) (35/37): 211-230. Bibcode: 1987Globu..35..211D. ISSN0436-0664. JSTOR41628839.
Graham, Alister W. (2008). “Populating the Galaxy Velocity Dispersion: Supermassive Black Hole Mass Diagram, A Catalogue of ( M bh , σ) Values”. Publications of the Astronomical Society of Australia25 (4): 167–175. Bibcode: 2008PASA...25..167G. doi:10.1071/AS08013. ISSN1323-3580.
Dekker, Elly (1987). “On the Dispersal of Knowledge of the Southern Celestial Sky / ZUR VERBREITUNG VON WISSEN ÜBER DEN SÜDLICHEN STERNENHIMMEL”. Der Globusfreund (International Coronelli Society for the Study of Globes) (35/37): 211-230. Bibcode: 1987Globu..35..211D. ISSN0436-0664. JSTOR41628839.
“Field of View”. Kepler Mission: A search for habitable planets. NASA. 2009年8月25日時点のオリジナルよりアーカイブ。2009年8月25日閲覧。
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Dekker, Elly (1987). “On the Dispersal of Knowledge of the Southern Celestial Sky / ZUR VERBREITUNG VON WISSEN ÜBER DEN SÜDLICHEN STERNENHIMMEL”. Der Globusfreund (International Coronelli Society for the Study of Globes) (35/37): 211-230. Bibcode: 1987Globu..35..211D. ISSN0436-0664. JSTOR41628839.
Graham, Alister W. (2008). “Populating the Galaxy Velocity Dispersion: Supermassive Black Hole Mass Diagram, A Catalogue of ( M bh , σ) Values”. Publications of the Astronomical Society of Australia25 (4): 167–175. Bibcode: 2008PASA...25..167G. doi:10.1071/AS08013. ISSN1323-3580.
Condos, Theony (1997). Star myths of the Greeks and Romans : a sourcebook containing the Constellations of Pseudo-Eratosthenes and the Poetic astronomy of Hyginus. Grand Rapids, MI, U.S.A.: Phanes Press. pp. 87-90. ISBN978-1-60925-678-4. OCLC840823460
Hard, Robin (2015-08-01). “8. CYGNUS, THE SWAN, originally known as THE BIRD”. Constellation Myths: with Aratus's Phaenomena. Oxford Worlds Classics. Oxford University Press. pp. 20-23. ISBN978-0-19871-698-3. OCLC1026890396