APA (7th ed.) Citation

Ehrlich, P. R., & Roughgarden, J. (1987). The science of ecology. Macmillan.

Chicago Style (17th ed.) Citation

Ehrlich, Paul R., and Joan Roughgarden. The Science of Ecology. New York: Macmillan, 1987.

MLA (9th ed.) Citation

Ehrlich, Paul R., and Joan Roughgarden. The Science of Ecology. Macmillan, 1987.