APA (7th ed.) Citation

(1988). Roads in the Rocky Mountain Region. U.S. Dept. of Agriculture, Forest Service.

Chicago Style (17th ed.) Citation

Roads in the Rocky Mountain Region. [Washington, D.C.?]: U.S. Dept. of Agriculture, Forest Service, 1988.

MLA (9th ed.) Citation

Roads in the Rocky Mountain Region. U.S. Dept. of Agriculture, Forest Service, 1988.