Tohutoro APA (7th ed.)
Penna, A. N. (2015). The human footprint: A global environmental history (Second edition.). Wiley Blackwell.
Tohutoru Kātū Chicago (17th ed.)
Penna, Anthony N. The Human Footprint: A Global Environmental History. Second edition. Chichester, [England]: Wiley Blackwell, 2015.
Tohutoro MLA (9th ed.)
Penna, Anthony N. The Human Footprint: A Global Environmental History. Second edition. Wiley Blackwell, 2015.
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