APA Citation

Ehrlich, P. R., & Ehrlich, A. H. (1972). Population, resources, environment;: Issues in human ecology (2d ed.). San Francisco,: W.H. Freeman.

Chicago Style Citation

Ehrlich, Paul R., and Anne H. Ehrlich. Population, Resources, Environment;: Issues in Human Ecology. 2d ed. San Francisco,: W.H. Freeman, 1972.

MLA Citation

Ehrlich, Paul R., and Anne H. Ehrlich. Population, Resources, Environment;: Issues in Human Ecology. 2d ed. San Francisco,: W.H. Freeman, 1972.

Warning: These citations may not always be 100% accurate.