Hardin, G. (1961). Biology, its principles and implications. San Francisco: W. H. Freeman and Co..
Trích dẫn kiểu ChicagoHardin, Garrett. Biology, Its Principles and Implications. San Francisco: W. H. Freeman and Co., 1961.
MLA CitationHardin, Garrett. Biology, Its Principles and Implications. San Francisco: W. H. Freeman and Co., 1961.
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