APA stil citiranja

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

Chicago stil citiranja

Ehrlich, Paul R., and Anne H. Ehrlich. Population resources environment: Population resources environment : issues in human ecology. San Francisco, Cal.: W.H. Freeman and Company, 1970.

MLA stil citiranja

Ehrlich, Paul R., and Anne H. Ehrlich. Population resources environment: Population resources environment : issues in human ecology. San Francisco, Cal.: W.H. Freeman and Company, 1970.