APA (7th ed.) Citation

Sagan, C. (1973). The cosmic connection: An extraterrestrial perspective ([1st ed.].). Anchor Press.

Chicago Style (17th ed.) Citation

Sagan, Carl. The Cosmic Connection: An Extraterrestrial Perspective. [1st ed.]. Garden City, N.Y.: Anchor Press, 1973.

MLA (9th ed.) Citation

Sagan, Carl. The Cosmic Connection: An Extraterrestrial Perspective. [1st ed.]. Anchor Press, 1973.