United States. Forest Service. Intermountain Region. (1992). Without a trace: The wilderness challenge. U.S. Dept. of Agriculture, Forest Service, Intermountain Region.
Chicago Style (17th ed.) CitationUnited States. Forest Service. Intermountain Region. Without a Trace: The Wilderness Challenge. Ogden, Utah: U.S. Dept. of Agriculture, Forest Service, Intermountain Region, 1992.
MLA (9th ed.) CitationUnited States. Forest Service. Intermountain Region. Without a Trace: The Wilderness Challenge. U.S. Dept. of Agriculture, Forest Service, Intermountain Region, 1992.
Warning: These citations may not always be 100% accurate.