APA (7th ed.) Citation

United States. Bureau of Mines. (1938). State regulations pertaining to use of internalƯcombustion engines in coal and metal mines and in tunnels. [s.n.].

Chicago Style (17th ed.) Citation

United States. Bureau of Mines. State Regulations Pertaining to Use of InternalƯcombustion Engines in Coal and Metal Mines and in Tunnels. [Washington]: [s.n.], 1938.

MLA (9th ed.) Citation

United States. Bureau of Mines. State Regulations Pertaining to Use of InternalƯcombustion Engines in Coal and Metal Mines and in Tunnels. [s.n.], 1938.