APA (7th ed.) Citation

Wickman, B. E., Mason, R. R., Trostle, G. C., & United States. Forest Service. (1981). Douglas-fir tussock moth (Revised Jan. 1981.). U.S. Dept. of Agriculture, Forest Service.

Chicago Style (17th ed.) Citation

Wickman, Boyd E., Richard R. Mason, Galen C. Trostle, and United States. Forest Service. Douglas-fir Tussock Moth. Revised Jan. 1981. [Washington, D.C.?]: U.S. Dept. of Agriculture, Forest Service, 1981.

MLA (8th ed.) Citation

Wickman, Boyd E., et al. Douglas-fir Tussock Moth. Revised Jan. 1981. U.S. Dept. of Agriculture, Forest Service, 1981.