Cita APA

Duncan, D., & Burns, K. 1. (2011). The national parks: America's best idea: an illustrated history (1. edition.). New York: A. A. Knopf.

Citación estilo Chicago

Duncan, Dayton, y Ken 1953- Burns. The National Parks: America's Best Idea: An Illustrated History. 1. edition. New York: A. A. Knopf, 2011.

Cita MLA

Duncan, Dayton, y Ken 1953- Burns. The National Parks: America's Best Idea: An Illustrated History. 1. edition. New York: A. A. Knopf, 2011.