APA (7th ed.) Citation

(1987). Extraterrestrials: Science and alien intelligence. Cambridge Univ. Press.

Chicago Style (17th ed.) Citation

Extraterrestrials: Science and Alien Intelligence. Cambridge [u.a.]: Cambridge Univ. Press, 1987.

MLA (9th ed.) Citation

Extraterrestrials: Science and Alien Intelligence. Cambridge Univ. Press, 1987.

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