APA način citiranja

Hardin, G. (1961). Biology, its principles and implications. San Francisco: W. H. Freeman and Co..

Čikaški stil citiranja

Hardin, Garrett. Biology, Its Principles and Implications. San Francisco: W. H. Freeman and Co., 1961.

MLA način citiranja

Hardin, Garrett. Biology, Its Principles and Implications. San Francisco: W. H. Freeman and Co., 1961.

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