United States. Bureau of Entomology and Plant Quarantine. (1937). Flytraps and their operation. [s.n.].
Chicago Style (17th ed.) CitationUnited States. Bureau of Entomology and Plant Quarantine. Flytraps and Their Operation. [Washington]: [s.n.], 1937.
MLA (9th ed.) CitationUnited States. Bureau of Entomology and Plant Quarantine. Flytraps and Their Operation. [s.n.], 1937.
Warning: These citations may not always be 100% accurate.