APA (7th ed.) Citation

Kucera, D. R., & Orr, P. W. (1980). Spruce budworm in the eastern United States. U.S. Dept. of Agriculture, Forest Service.

Chicago Style (17th ed.) Citation

Kucera, Daniel R., and Peter W. Orr. Spruce Budworm in the Eastern United States. [Washington, D.C.?]: U.S. Dept. of Agriculture, Forest Service, 1980.

MLA (9th ed.) Citation

Kucera, Daniel R., and Peter W. Orr. Spruce Budworm in the Eastern United States. U.S. Dept. of Agriculture, Forest Service, 1980.