Heacox, K. (2001). The making of the national parks: An American idea. National Geographic.
Style de citation Chicago (17e éd.)Heacox, Kim. The Making of the National Parks: An American Idea. Washington, D.C: National Geographic, 2001.
Style de citation MLA (9e éd.)Heacox, Kim. The Making of the National Parks: An American Idea. National Geographic, 2001.
Attention : ces citations peuvent ne pas être correctes à 100%.