APA (7th ed.) Citation

Simpson, M. (2007). Forested plant associations of the Oregon East Cascades. U.S. Dept. of Agriculture, Forest Service, Pacific Northwest Region.

Chicago Style (17th ed.) Citation

Simpson, Michael. Forested Plant Associations of the Oregon East Cascades. [Washington, D.C.]: U.S. Dept. of Agriculture, Forest Service, Pacific Northwest Region, 2007.

MLA (9th ed.) Citation

Simpson, Michael. Forested Plant Associations of the Oregon East Cascades. U.S. Dept. of Agriculture, Forest Service, Pacific Northwest Region, 2007.