APA (7th ed.) Citation

Hart, M. H., & Zuckerman, B. (1982). Extraterrestrials, where are they? Pergamon Press.

Chicago Style (17th ed.) Citation

Hart, Michael H., and Ben Zuckerman. Extraterrestrials, Where Are They? New York: Pergamon Press, 1982.

MLA (9th ed.) Citation

Hart, Michael H., and Ben Zuckerman. Extraterrestrials, Where Are They? Pergamon Press, 1982.