APA Citation

Ehrlich, P. R., Holdren, J. P., & Ehrlich, A. H. (1977). Ecoscience: Population, Resources, Environment. San Francisco: Freeman.

Chicago Style Citation

Ehrlich, Paul R., J. P. Holdren, and A. H. Ehrlich. Ecoscience: Population, Resources, Environment. San Francisco: Freeman, 1977.

MLA Citation

Ehrlich, Paul R., J. P. Holdren, and A. H. Ehrlich. Ecoscience: Population, Resources, Environment. San Francisco: Freeman, 1977.

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