Hartman, H. L., & Britton, S. G. (1992). SME mining engineering handbook (2nd ed.). Littleton, CO.: Society for Mining, Metallurgy, and Exploration.
Παραπομπή Chicago StyleHartman, Howard L., and Scott G. Britton. SME Mining Engineering Handbook. 2nd ed. Littleton, CO.: Society for Mining, Metallurgy, and Exploration, 1992.
Παραπομπή MLAHartman, Howard L., and Scott G. Britton. SME Mining Engineering Handbook. 2nd ed. Littleton, CO.: Society for Mining, Metallurgy, and Exploration, 1992.
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