APA (7th ed.) Citation

United States. Forest Service. (1928). San Juan National Forest, Colo. U.S. GPO.

Chicago Style (17th ed.) Citation

United States. Forest Service. San Juan National Forest, Colo. Washington: U.S. GPO, 1928.

MLA (9th ed.) Citation

United States. Forest Service. San Juan National Forest, Colo. U.S. GPO, 1928.

Warning: These citations may not always be 100% accurate.