APA (7th ed.) Citation

United States. Bureau of Entomology and Plant Quarantine. (1938). American dog tick, eastern carrier of Rocky Mountain spotted fever. [s.n.].

Chicago Style (17th ed.) Citation

United States. Bureau of Entomology and Plant Quarantine. American Dog Tick, Eastern Carrier of Rocky Mountain Spotted Fever. [Washington]: [s.n.], 1938.

MLA (9th ed.) Citation

United States. Bureau of Entomology and Plant Quarantine. American Dog Tick, Eastern Carrier of Rocky Mountain Spotted Fever. [s.n.], 1938.