United States. Forest Health Protection. Major forest insect and disease conditions in the United States. U.S. Dept. of Agriculture, Forest Service.
Chicago Style (17th ed.) CitationUnited States. Forest Health Protection. Major Forest Insect and Disease Conditions in the United States. Washington, D.C.: U.S. Dept. of Agriculture, Forest Service.
MLA (9th ed.) CitationUnited States. Forest Health Protection. Major Forest Insect and Disease Conditions in the United States. U.S. Dept. of Agriculture, Forest Service.
Warning: These citations may not always be 100% accurate.