APA (7th ed.) Citation

United States. Bureau of Mines. (1944). Procedure for Testing Nonemergency Gas Respirators (Chemical Cartridge Respirators) for Permissability; Approved Nov. 13, 1944. [s.n.].

Chicago Style (17th ed.) Citation

United States. Bureau of Mines. Procedure for Testing Nonemergency Gas Respirators (Chemical Cartridge Respirators) for Permissability; Approved Nov. 13, 1944. [Washington]: [s.n.], 1944.

MLA (9th ed.) Citation

United States. Bureau of Mines. Procedure for Testing Nonemergency Gas Respirators (Chemical Cartridge Respirators) for Permissability; Approved Nov. 13, 1944. [s.n.], 1944.