United States. Forest Service. Land areas of the National Forest System. U.S. Dept. of Agriculture, Forest Service.
Chicago Style (17th ed.) CitationUnited States. Forest Service. Land Areas of the National Forest System. [Washington, D.C.?]: U.S. Dept. of Agriculture, Forest Service.
MLA (9th ed.) CitationUnited States. Forest Service. Land Areas of the National Forest System. U.S. Dept. of Agriculture, Forest Service.
Warning: These citations may not always be 100% accurate.