APA (7th ed.) Citation

Mitchell, D. R. (1950). Coal preparation (2d ed.). American Institute of Mining and Metallurgical Engineers.

Chicago Style (17th ed.) Citation

Mitchell, David Ray. Coal Preparation. 2d ed. New York: American Institute of Mining and Metallurgical Engineers, 1950.

MLA (9th ed.) Citation

Mitchell, David Ray. Coal Preparation. 2d ed. American Institute of Mining and Metallurgical Engineers, 1950.