APA (7th ed.) Citation

Randall, R., Silverberg, R., & Garrett, R. (1982). The shrouded planet. Ace Books.

Chicago Style (17th ed.) Citation

Randall, Robert, Robert Silverberg, and Randall Garrett. The Shrouded Planet. New York: Ace Books, 1982.

MLA (8th ed.) Citation

Randall, Robert, et al. The Shrouded Planet. Ace Books, 1982.