APA (7th ed.) Citation

United States. Bureau of Mines. (1938). Active list of permissible explosives and blasting devices approved prior to June 30, 1938. [s.n.].

Chicago Style (17th ed.) Citation

United States. Bureau of Mines. Active List of Permissible Explosives and Blasting Devices Approved Prior to June 30, 1938. [Washington]: [s.n.], 1938.

MLA (9th ed.) Citation

United States. Bureau of Mines. Active List of Permissible Explosives and Blasting Devices Approved Prior to June 30, 1938. [s.n.], 1938.