APA (7th ed.) Citation

Duncan, D., & Burns, K. (2009). The national parks: America's best idea : an illustrated history (First edition.). Alfred A. Knopf.

Chicago Style (17th ed.) Citation

Duncan, Dayton, and Ken Burns. The National Parks: America's Best Idea : An Illustrated History. First edition. New York: Alfred A. Knopf, 2009.

MLA (9th ed.) Citation

Duncan, Dayton, and Ken Burns. The National Parks: America's Best Idea : An Illustrated History. First edition. Alfred A. Knopf, 2009.