APA (7th ed.) Citation

United States. Forest Service. Rocky Mountain Region & Geometronics Service Center (U.S.). (1987). Arapaho National Forest, Colorado, 1979: Forest visitors map (Limited revisions, 1979.). The Office.

Chicago Style (17th ed.) Citation

United States. Forest Service. Rocky Mountain Region and Geometronics Service Center (U.S.). Arapaho National Forest, Colorado, 1979: Forest Visitors Map. Limited revisions, 1979. [Denver, Colo.?]: The Office, 1987.

MLA (9th ed.) Citation

United States. Forest Service. Rocky Mountain Region and Geometronics Service Center (U.S.). Arapaho National Forest, Colorado, 1979: Forest Visitors Map. Limited revisions, 1979. The Office, 1987.