Cita APA (7a ed.)

Kirk, E. (2010). Human footprint: Everything you will eat, use, wear, buy, and throw out in your lifetime. National Geographic.

Cita Chicago Style (17a ed.)

Kirk, Ellen. Human Footprint: Everything You Will Eat, Use, Wear, Buy, and Throw Out in Your Lifetime. Washington, D.C.: National Geographic, 2010.

Cita MLA (8a ed.)

Kirk, Ellen. Human Footprint: Everything You Will Eat, Use, Wear, Buy, and Throw Out in Your Lifetime. National Geographic, 2010.

Precaución: Estas citas no son 100% exactas.