APA (7th ed.) Citation

Wallace, R. A., Sanders, G. P., & Ferl, R. J. (1991). Biology, the science of life (3rd ed.). Harper Collins.

Chicago Style (17th ed.) Citation

Wallace, Robert A., Gerald P. Sanders, and Robert J. Ferl. Biology, the Science of Life. 3rd ed. New York: Harper Collins, 1991.

MLA (9th ed.) Citation

Wallace, Robert A., et al. Biology, the Science of Life. 3rd ed. Harper Collins, 1991.