APA (7th ed.) Citation

Leonhard, J. W. (1979). Coal preparation (4. ed.). The American Institute of Mining, Metallurgical and Petroleum Engineers.

Chicago Style (17th ed.) Citation

Leonhard, Joseph W. Coal Preparation. 4. ed. New York: The American Institute of Mining, Metallurgical and Petroleum Engineers, 1979.

MLA (9th ed.) Citation

Leonhard, Joseph W. Coal Preparation. 4. ed. The American Institute of Mining, Metallurgical and Petroleum Engineers, 1979.