APA (7th ed.) Citation

Humphreys, K. K., & Leonard, J. W. (1983). Basic mathematics and computer techniques for coal preparation and mining. M. Dekker.

Chicago Style (17th ed.) Citation

Humphreys, Kenneth King, and Joseph W. Leonard. Basic Mathematics and Computer Techniques for Coal Preparation and Mining. New York: M. Dekker, 1983.

MLA (9th ed.) Citation

Humphreys, Kenneth King, and Joseph W. Leonard. Basic Mathematics and Computer Techniques for Coal Preparation and Mining. M. Dekker, 1983.