APA (7th ed.) Citation

United States. Bureau of Mines. (1939). Allaying dust in bituminousƯcoal mines with water. [s.n.].

Chicago Style (17th ed.) Citation

United States. Bureau of Mines. Allaying Dust in BituminousƯcoal Mines with Water. [Washington]: [s.n.], 1939.

MLA (9th ed.) Citation

United States. Bureau of Mines. Allaying Dust in BituminousƯcoal Mines with Water. [s.n.], 1939.