APA (7th ed.) Citation

United States. Bureau of Mines. (1937). Ventilation at anthracite collieries of northern Pennsylvania field. [s.n.].

Chicago Style (17th ed.) Citation

United States. Bureau of Mines. Ventilation at Anthracite Collieries of Northern Pennsylvania Field. [Washington]: [s.n.], 1937.

MLA (9th ed.) Citation

United States. Bureau of Mines. Ventilation at Anthracite Collieries of Northern Pennsylvania Field. [s.n.], 1937.

Warning: These citations may not always be 100% accurate.