Gaya APA

Ehnrlich, P, R. (2000). Human Natures : Genes, Cultures,... . : Island Press.Washington, D.C..

Gaya MLA

Ehnrlich, Paul, R.. "Human Natures : Genes, Cultures,...". : Island Press.Washington, D.C., 2000. Skripsi, Tesis, Disertasi.