United States. Forest Service. Northern Research Station & Cordell, H. K. (2012). Outdoor recreation in the northern United States. U.S. Dept. of Agriculture, Forest Service, Northern Research Station.
Chicago Style (17th ed.) CitationUnited States. Forest Service. Northern Research Station and H. Ken Cordell. Outdoor Recreation in the Northern United States. Newtown Square, PA: U.S. Dept. of Agriculture, Forest Service, Northern Research Station, 2012.
MLA (9th ed.) CitationUnited States. Forest Service. Northern Research Station and H. Ken Cordell. Outdoor Recreation in the Northern United States. U.S. Dept. of Agriculture, Forest Service, Northern Research Station, 2012.
Warning: These citations may not always be 100% accurate.