United States. Forest Service. Pacific Northwest Region. (1981). Draft environmental impact statement for standards and guidelines: Pacific Northwest region plan : Oregon, Washington and portions of California and Idaho. U.S. Dept. of Agriculture, Forest Service, Pacific Northwest Region.
Chicago Style (17th ed.) CitationUnited States. Forest Service. Pacific Northwest Region. Draft Environmental Impact Statement for Standards and Guidelines: Pacific Northwest Region Plan : Oregon, Washington and Portions of California and Idaho. Portland, Ore: U.S. Dept. of Agriculture, Forest Service, Pacific Northwest Region, 1981.
MLA (9th ed.) CitationUnited States. Forest Service. Pacific Northwest Region. Draft Environmental Impact Statement for Standards and Guidelines: Pacific Northwest Region Plan : Oregon, Washington and Portions of California and Idaho. U.S. Dept. of Agriculture, Forest Service, Pacific Northwest Region, 1981.