APA (7th ed.) Citation

Penna, A. N. (2010). The human footprint : a global environmental history / Anthony N. Penna: A global environmental history. Wiley-Blackwell.

Chicago Style (17th ed.) Citation

Penna, Anthony N. The Human Footprint : A Global Environmental History / Anthony N. Penna: A Global Environmental History. Malden, MA: Wiley-Blackwell, 2010.

MLA (9th ed.) Citation

Penna, Anthony N. The Human Footprint : A Global Environmental History / Anthony N. Penna: A Global Environmental History. Wiley-Blackwell, 2010.

Warning: These citations may not always be 100% accurate.