APA (7th ed.) Citation

United States. National Park Service. Roosevelt National Forest Ranger Office. (1991). Backcountry use: Rocky Mountain National Park (Rev. 9-90.). Roosevelt National Forest Ranger Office.

Chicago Style (17th ed.) Citation

United States. National Park Service. Roosevelt National Forest Ranger Office. Backcountry Use: Rocky Mountain National Park. Rev. 9-90. Boulder, CO: Roosevelt National Forest Ranger Office, 1991.

MLA (9th ed.) Citation

United States. National Park Service. Roosevelt National Forest Ranger Office. Backcountry Use: Rocky Mountain National Park. Rev. 9-90. Roosevelt National Forest Ranger Office, 1991.