APA (7th ed.) Citation

Etra, Spinner, & Björkman. (1988). Aliens for breakfast. Random House.

Chicago Style (17th ed.) Citation

Etra, Spinner, and Björkman. Aliens for Breakfast. New York: Random House, 1988.

MLA (8th ed.) Citation

Etra, et al. Aliens for Breakfast. Random House, 1988.