APA (7th ed.) Citation

United States. Bureau of Entomology. (1912). Hydrocyanic-acid gas against household insects. GPO.

Chicago Style (17th ed.) Citation

United States. Bureau of Entomology. Hydrocyanic-acid Gas Against Household Insects. [Washington]: GPO, 1912.

MLA (9th ed.) Citation

United States. Bureau of Entomology. Hydrocyanic-acid Gas Against Household Insects. GPO, 1912.

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