Stone, J. G., & Dunn, P. G. (2002). Ore reserve estimates in the real world (3rd ed.). Society of Economic Geologists.
Lua i Stíl Chicago (17ú heag.)Stone, John G., agus Peter G. Dunn. Ore Reserve Estimates in the Real World. 3rd ed. Littleton, CO: Society of Economic Geologists, 2002.
Lua MLA (9ú heag.)Stone, John G., agus Peter G. Dunn. Ore Reserve Estimates in the Real World. 3rd ed. Society of Economic Geologists, 2002.
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