APA (7th ed.) Citation

Ehrlich, A. H., & Ehrlich, P. R. (1970). Population resources environment: Issues in human ecology. W.H. Freeman and Company.

Chicago Style (17th ed.) Citation

Ehrlich, Anne H., and Paul R. Ehrlich. Population Resources Environment: Issues in Human Ecology. W.H. Freeman and Company, 1970.

MLA (8th ed.) Citation

Ehrlich, Anne H., and Paul R. Ehrlich. Population Resources Environment: Issues in Human Ecology. W.H. Freeman and Company, 1970.

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