APA (7th ed.) Citation

United States. Forest Service. (1989). Following Lewis and Clark across the Clearwater National Forest. [U.S. Dept. of Agriculture, Forest Service].

Chicago Style (17th ed.) Citation

United States. Forest Service. Following Lewis and Clark Across the Clearwater National Forest. [Washington, D.C.?]: [U.S. Dept. of Agriculture, Forest Service], 1989.

MLA (9th ed.) Citation

United States. Forest Service. Following Lewis and Clark Across the Clearwater National Forest. [U.S. Dept. of Agriculture, Forest Service], 1989.