APA (7th ed.) Citation

United States. Forest Service. (1980). Tongass National Forest, Alaska, 1973 (Rev. 1980.). The Service.

Chicago Style (17th ed.) Citation

United States. Forest Service. Tongass National Forest, Alaska, 1973. Rev. 1980. [Washington, D.C.?]: The Service, 1980.

MLA (8th ed.) Citation

United States. Forest Service. Tongass National Forest, Alaska, 1973. Rev. 1980. The Service, 1980.