APA (7th ed.) Citation

Sagan, C. (2013). Cosmos (Ballantine Books Trade Paperbacks edition, 2013.). Ballantine.

Chicago Style (17th ed.) Citation

Sagan, Carl. Cosmos. Ballantine Books Trade Paperbacks edition, 2013. New York: Ballantine, 2013.

MLA (8th ed.) Citation

Sagan, Carl. Cosmos. Ballantine Books Trade Paperbacks edition, 2013. Ballantine, 2013.

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