APA (7th ed.) Citation

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

Chicago Style (17th ed.) Citation

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

MLA (9th ed.) Citation

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