Stone, J. G., & Dunn, P. G. (2002). Ore reserve estimates in the real world (3rd ed.). Society of Economic Geologists.
Dyfyniad Arddull ChicagoStone, John G., and Peter G. Dunn. Ore Reserve Estimates in the Real World. 3rd ed. Littleton, CO: Society of Economic Geologists, 2002.
Dyfyniad MLAStone, John G., and Peter G. Dunn. Ore Reserve Estimates in the Real World. 3rd ed. Society of Economic Geologists, 2002.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.