United States. Forest Service. Rocky Mountain Region. (1990). Silvicultural standards and guidelines for Rocky Mountain Region: Supplemental draft environmental impact statement for the amended Rocky Mountain Regional guide. U.S. Dept. of Agriculture, Forest Service.
Chicago Style (17th ed.) CitationUnited States. Forest Service. Rocky Mountain Region. Silvicultural Standards and Guidelines for Rocky Mountain Region: Supplemental Draft Environmental Impact Statement for the Amended Rocky Mountain Regional Guide. Denver, Colo.: U.S. Dept. of Agriculture, Forest Service, 1990.
MLA (9th ed.) CitationUnited States. Forest Service. Rocky Mountain Region. Silvicultural Standards and Guidelines for Rocky Mountain Region: Supplemental Draft Environmental Impact Statement for the Amended Rocky Mountain Regional Guide. U.S. Dept. of Agriculture, Forest Service, 1990.