United States. Bureau of Entomology. (1933). Observations on European corn borer and its major parasites in the Orient. [s.n.].
Chicago Style (17th ed.) CitationUnited States. Bureau of Entomology. Observations on European Corn Borer and Its Major Parasites in the Orient. [Washington]: [s.n.], 1933.
MLA (9th ed.) CitationUnited States. Bureau of Entomology. Observations on European Corn Borer and Its Major Parasites in the Orient. [s.n.], 1933.
Warning: These citations may not always be 100% accurate.