McDonald, G. I., & Forestry Sciences Laboratory. (1981). Differential defoliation of neighboring Douglas-fir trees by western spruce budworm. U.S. Dept. of Agriculture, Forest Service, Intermountain Forest and Range Experiment Station.
Chicago Style (17th ed.) CitationMcDonald, G. I., and Forestry Sciences Laboratory. Differential Defoliation of Neighboring Douglas-fir Trees by Western Spruce Budworm. U.S. Dept. of Agriculture, Forest Service, Intermountain Forest and Range Experiment Station, 1981.
MLA (8th ed.) CitationMcDonald, G. I., and Forestry Sciences Laboratory. Differential Defoliation of Neighboring Douglas-fir Trees by Western Spruce Budworm. U.S. Dept. of Agriculture, Forest Service, Intermountain Forest and Range Experiment Station, 1981.
Warning: These citations may not always be 100% accurate.