Simmons, I. (1989). Changing the face of the earth: Culture, environment, history. Basil Blackwell.
Čikaški stil citiranja (17. izdanje)Simmons, I.G. Changing the Face of the Earth: Culture, Environment, History. Cambridge, Mass.: Basil Blackwell, 1989.
MLA način citiranja (9. izdanje)Simmons, I.G. Changing the Face of the Earth: Culture, Environment, History. Basil Blackwell, 1989.
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