United States. Bureau of Entomology and Plant Quarantine. (1942). Studies on control of cabbage caterpillars with derris in the South. [s.n.].
Chicago Style (17th ed.) CitationUnited States. Bureau of Entomology and Plant Quarantine. Studies on Control of Cabbage Caterpillars with Derris in the South. [Washington]: [s.n.], 1942.
MLA (9th ed.) CitationUnited States. Bureau of Entomology and Plant Quarantine. Studies on Control of Cabbage Caterpillars with Derris in the South. [s.n.], 1942.
Warning: These citations may not always be 100% accurate.