APA (7th ed.) Citation

Ehrlich, P. R., & Ehrlich, A. H. (1981). Extinction: The causes and consequences of the disappearance of species. Random House.

Chicago Style (17th ed.) Citation

Ehrlich, Paul R., and Anne H. Ehrlich. Extinction: The Causes and Consequences of the Disappearance of Species. New York: Random House, 1981.

MLA (9th ed.) Citation

Ehrlich, Paul R., and Anne H. Ehrlich. Extinction: The Causes and Consequences of the Disappearance of Species. Random House, 1981.