APA

The American Institute of Mining and Metallurgical Engineers, . (1943). Coal preparation. New York: Am.Inst.Min.Met.Eng.

Chicago

The American Institute of Mining and Metallurgical Engineers, . 1943. Coal preparation. New York: Am.Inst.Min.Met.Eng.

Harvard

The American Institute of Mining and Metallurgical Engineers, . (1943). Coal preparation. New York: Am.Inst.Min.Met.Eng.

MLA

The American Institute of Mining and Metallurgical Engineers, . Coal preparation. New York: Am.Inst.Min.Met.Eng. 1943.