APA (7th ed.) Citation

Keiter, R. B. (2013). To conserve unimpaired: The evolution of the national park idea. Island Press.

Chicago Style (17th ed.) Citation

Keiter, Robert B. To Conserve Unimpaired: The Evolution of the National Park Idea. Washington: Island Press, 2013.

MLA (8th ed.) Citation

Keiter, Robert B. To Conserve Unimpaired: The Evolution of the National Park Idea. Island Press, 2013.