APA (7th ed.) Citation

United States. War Department. (1931). Defense against chemical warfare. U.S. GPO.

Chicago Style (17th ed.) Citation

United States. War Department. Defense Against Chemical Warfare. Washington: U.S. GPO, 1931.

MLA (9th ed.) Citation

United States. War Department. Defense Against Chemical Warfare. U.S. GPO, 1931.

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