United States. Army. Chemical Warfare Service. (1932). Acid-vapor gas mask; general and technical instructions. U.S. GPO.
Chicago Style (17th ed.) CitationUnited States. Army. Chemical Warfare Service. Acid-vapor Gas Mask; General and Technical Instructions. Washington: U.S. GPO, 1932.
MLA (9th ed.) CitationUnited States. Army. Chemical Warfare Service. Acid-vapor Gas Mask; General and Technical Instructions. U.S. GPO, 1932.
Warning: These citations may not always be 100% accurate.