APA (7th ed.) Citation

United States. Bureau of Mines. (1940). Mine Safety Board decision 32: Prevention of coal-dust explosions by rock dusting. [s.n.].

Chicago Style (17th ed.) Citation

United States. Bureau of Mines. Mine Safety Board Decision 32: Prevention of Coal-dust Explosions by Rock Dusting. [Washington]: [s.n.], 1940.

MLA (9th ed.) Citation

United States. Bureau of Mines. Mine Safety Board Decision 32: Prevention of Coal-dust Explosions by Rock Dusting. [s.n.], 1940.