APA Citation

Ehrlich, P. R. (1971). Man And The Ecosphere. W.H. Freeman.

Chicago Style Citation

Ehrlich, Paul R. Man And The Ecosphere. W.H. Freeman, 1971.

MLA Citation

Ehrlich, Paul R. Man And The Ecosphere. W.H. Freeman, 1971.

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