APA (7th ed.) Citation

United States. Bureau of Entomology and Plant Quarantine. (1937). Machine for examination of flies. [s.n.].

Chicago Style (17th ed.) Citation

United States. Bureau of Entomology and Plant Quarantine. Machine for Examination of Flies. [Washington]: [s.n.], 1937.

MLA (9th ed.) Citation

United States. Bureau of Entomology and Plant Quarantine. Machine for Examination of Flies. [s.n.], 1937.

Warning: These citations may not always be 100% accurate.