United States. Bureau of Entomology and Plant Quarantine. (1942). Hibernation of corn earworm in central and northeastern parts of United States. [s.n.].
Chicago Style (17th ed.) CitationUnited States. Bureau of Entomology and Plant Quarantine. Hibernation of Corn Earworm in Central and Northeastern Parts of United States. [Washington]: [s.n.], 1942.
MLA (9th ed.) CitationUnited States. Bureau of Entomology and Plant Quarantine. Hibernation of Corn Earworm in Central and Northeastern Parts of United States. [s.n.], 1942.
Warning: These citations may not always be 100% accurate.