APA (7th ed.) Citation

United States. Bureau of Entomology and Plant Quarantine. (1939). Telescopic spray extension rod for use in bark beetle control work. [s.n.].

Chicago Style (17th ed.) Citation

United States. Bureau of Entomology and Plant Quarantine. Telescopic Spray Extension Rod for Use in Bark Beetle Control Work. [Washington]: [s.n.], 1939.

MLA (9th ed.) Citation

United States. Bureau of Entomology and Plant Quarantine. Telescopic Spray Extension Rod for Use in Bark Beetle Control Work. [s.n.], 1939.