APA (7th ed.) Citation

United States. National Park Service. (1993). Rocky Mountain, Rocky Mountain National Park, Colorado: Backcountry camping guide. National Park Service, U.S. Dept. of the Interior.

Chicago Style (17th ed.) Citation

United States. National Park Service. Rocky Mountain, Rocky Mountain National Park, Colorado: Backcountry Camping Guide. [Washington, D.C.?]: National Park Service, U.S. Dept. of the Interior, 1993.

MLA (9th ed.) Citation

United States. National Park Service. Rocky Mountain, Rocky Mountain National Park, Colorado: Backcountry Camping Guide. National Park Service, U.S. Dept. of the Interior, 1993.