APA (7th ed.) Citation

United States. Forest Service. (1997). Firewood map, Caribou National Forest. [U.S. Dept. of Agriculture, Forest Service?].

Chicago Style (17th ed.) Citation

United States. Forest Service. Firewood Map, Caribou National Forest. [Ogden, Utah?]: [U.S. Dept. of Agriculture, Forest Service?], 1997.

MLA (9th ed.) Citation

United States. Forest Service. Firewood Map, Caribou National Forest. [U.S. Dept. of Agriculture, Forest Service?], 1997.