Ehrlich, P. R., Ehrlich, A. H., & Ehrlic, A. H. (1970). Population Resoures Environment: : issues in Human ecology. San Francisco: : W.H.Freeman.
Chicago Style CitationEhrlich, Paul R., Anne H. Ehrlich, and Anne H. Ehrlic. Population Resoures Environment: : Issues in Human Ecology. San Francisco: : W.H.Freeman, 1970.
MLA CitationEhrlich, Paul R., Anne H. Ehrlich, and Anne H. Ehrlic. Population Resoures Environment: : Issues in Human Ecology. San Francisco: : W.H.Freeman, 1970.
Warning: These citations may not always be 100% accurate.