APA (7th ed.) Citation

Neugebauer, О. (1968). On the Planetary of Copernicus.

Chicago Style (17th ed.) Citation

Neugebauer, О. On the Planetary of Copernicus. Oxford/New York, 1968.

MLA (8th ed.) Citation

Neugebauer, О. On the Planetary of Copernicus. 1968.

Warning: These citations may not always be 100% accurate.