Vogely, W. A., Stone, C. S., Newcomb, R. T., Hardy, W. C., & Wirsching, J. E. (1985). Economics of the mineral industries: : a series of articles by specialists (4th ed., completely revised and rewritten.). New York: American Institute of Mining, Metallurgical, and Petroleum Engineers.

Vogely, William A., Carla Sydney Stone, Richard T. Newcomb, W. Carey Hardy, and Joe E. Wirsching. Economics of the Mineral Industries: : A Series of Articles By Specialists. 4th ed., completely revised and rewritten. New York: American Institute of Mining, Metallurgical, and Petroleum Engineers, 1985.

Vogely, William A., et al. Economics of the Mineral Industries: : A Series of Articles By Specialists. 4th ed., completely revised and rewritten. New York: American Institute of Mining, Metallurgical, and Petroleum Engineers, 1985.