APA (7th ed.) Citation

United States. Bureau of Mines, Fieldner, A. C., & Porter, H. C. (1914). Weathering of Pittsburgh coal bed at experimental mine near Bruceton, Pa. U.S. GPO.

Chicago Style (17th ed.) Citation

United States. Bureau of Mines, Arno Carl Fieldner, and Horace C. Porter. Weathering of Pittsburgh Coal Bed at Experimental Mine Near Bruceton, Pa. Washington: U.S. GPO, 1914.

MLA (9th ed.) Citation

United States. Bureau of Mines, et al. Weathering of Pittsburgh Coal Bed at Experimental Mine Near Bruceton, Pa. U.S. GPO, 1914.