APA (7th ed.) Citation

United States. Bureau of Entomology and Plant Quarantine. (1939). Insect Pest Survey bulletin, Vol. 19, No. 6. [s.n.].

Chicago Style (17th ed.) Citation

United States. Bureau of Entomology and Plant Quarantine. Insect Pest Survey Bulletin, Vol. 19, No. 6. [Washington]: [s.n.], 1939.

MLA (9th ed.) Citation

United States. Bureau of Entomology and Plant Quarantine. Insect Pest Survey Bulletin, Vol. 19, No. 6. [s.n.], 1939.

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