APA (7th ed.) Citation

Foster, A. D., O'Bannon, D., & Shusett, R. (1979). Alien. Warner Books.

Chicago Style (17th ed.) Citation

Foster, Alan Dean, Dan O'Bannon, and Ronald Shusett. Alien. New York: Warner Books, 1979.

MLA (9th ed.) Citation

Foster, Alan Dean, et al. Alien. Warner Books, 1979.