Style de citation APA (7e éd.)

Ehrlich, P., & Ehrlich, A. H. (1972). Population, resources, environment: Issues in human ecology. W. H. Freeman.

Style de citation Chicago (17e éd.)

Ehrlich, Paul, et Anne H. Ehrlich. Population, Resources, Environment: Issues in Human Ecology. San Francisco: W. H. Freeman, 1972.

Style de citation MLA (9e éd.)

Ehrlich, Paul, et Anne H. Ehrlich. Population, Resources, Environment: Issues in Human Ecology. W. H. Freeman, 1972.