APA (7th ed.) Citation

Sagan, C. (1985). Cosmos. Ballantine Books.

Chicago Style (17th ed.) Citation

Sagan, Carl. Cosmos. New York: Ballantine Books, 1985.

MLA (8th ed.) Citation

Sagan, Carl. Cosmos. Ballantine Books, 1985.

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