APA (7th ed.) Citation

Goheen, E. M., & Willhite, E. A. (2006). Field guide to the common diseases and insect pests of Oregon and Washington conifers. USDA Forest Service, Pacific Northwest Region.

Chicago Style (17th ed.) Citation

Goheen, Ellen Michaels, and Elizabeth A. Willhite. Field Guide to the Common Diseases and Insect Pests of Oregon and Washington Conifers. [Portland, Or.]: USDA Forest Service, Pacific Northwest Region, 2006.

MLA (9th ed.) Citation

Goheen, Ellen Michaels, and Elizabeth A. Willhite. Field Guide to the Common Diseases and Insect Pests of Oregon and Washington Conifers. USDA Forest Service, Pacific Northwest Region, 2006.