APA (7th ed.) Citation

United States. Forest Service. Rocky Mountain Region. (1981). San Juan National Forest, Colorado, 1981: Travel map. The Office.

Chicago Style (17th ed.) Citation

United States. Forest Service. Rocky Mountain Region. San Juan National Forest, Colorado, 1981: Travel Map. Denver, Colo.: The Office, 1981.

MLA (9th ed.) Citation

United States. Forest Service. Rocky Mountain Region. San Juan National Forest, Colorado, 1981: Travel Map. The Office, 1981.

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