Kirk, E. (2011). Human footprint: Everything you will eat, use, wear, buy, and throw out in your lifetime. National Geographic.
Style de citation Chicago (17e éd.)Kirk, Ellen. Human Footprint: Everything You Will Eat, Use, Wear, Buy, and Throw Out in Your Lifetime. Washington, D.C.: National Geographic, 2011.
Style de citation MLA (8e éd.)Kirk, Ellen. Human Footprint: Everything You Will Eat, Use, Wear, Buy, and Throw Out in Your Lifetime. National Geographic, 2011.
Attention : ces citations peuvent ne pas être correctes à 100%.