Gertsch, R. E., & Bullock, R. L. (1998). Techniques in underground mining: Selections from Underground mining methods handbook. Littleton, CO: Society for Mining, Metallurgy, and Exploration.
Chicago Stili AlıntıGertsch, Richard E., and Richard Lee Bullock. Techniques in Underground Mining: Selections From Underground Mining Methods Handbook. Littleton, CO: Society for Mining, Metallurgy, and Exploration, 1998.
MLA AlıntıGertsch, Richard E., and Richard Lee Bullock. Techniques in Underground Mining: Selections From Underground Mining Methods Handbook. Littleton, CO: Society for Mining, Metallurgy, and Exploration, 1998.
Uyarı: Bu alıntı herzaman %100 doğru olmayabilir..