APA (7th ed.) Citation

United States. Bureau of Mines. (1943). Grounding Electrical Equipment In and About Coal Mines. [s.n.].

Chicago Style (17th ed.) Citation

United States. Bureau of Mines. Grounding Electrical Equipment In and About Coal Mines. [Washington]: [s.n.], 1943.

MLA (9th ed.) Citation

United States. Bureau of Mines. Grounding Electrical Equipment In and About Coal Mines. [s.n.], 1943.