APA (7th ed.) Citation

Kempthorne, D. (2007). The future of America's national parks: A report to the President of the United States. U.S. Dept. of the Interior, National Park Service.

Chicago Style (17th ed.) Citation

Kempthorne, Dirk. The Future of America's National Parks: A Report to the President of the United States. [Washington, D.C.]: U.S. Dept. of the Interior, National Park Service, 2007.

MLA (9th ed.) Citation

Kempthorne, Dirk. The Future of America's National Parks: A Report to the President of the United States. U.S. Dept. of the Interior, National Park Service, 2007.