Cavender, B. (1999). Mineral production costs: Analysis and management. Littleton, CO.: Society for Mining, Metallurgy, and Exploration, Inc.
Παραπομπή Chicago StyleCavender, Bruce. Mineral Production Costs: Analysis and Management. Littleton, CO.: Society for Mining, Metallurgy, and Exploration, Inc, 1999.
Παραπομπή MLACavender, Bruce. Mineral Production Costs: Analysis and Management. Littleton, CO.: Society for Mining, Metallurgy, and Exploration, Inc, 1999.
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