APA (7th ed.) Citation

Ehrlich, P. R. (1971). Man and the ecosphere: Readings from Scientific America. W.H. Freeman.

Chicago Style (17th ed.) Citation

Ehrlich, Paul R. Man and the Ecosphere: Readings from Scientific America. San Francisco: W.H. Freeman, 1971.

MLA (9th ed.) Citation

Ehrlich, Paul R. Man and the Ecosphere: Readings from Scientific America. W.H. Freeman, 1971.