Petruk, W., & Rule, A. R. (1994). Process mineralogy XII: Applications to environment, precious metals, mineral beneficiation, pyrometallurgy, coal and refractories. Warrendale, PA: Minerals, Metals & Materials Society.
Παραπομπή Chicago StylePetruk, William, and Albert R. Rule. Process Mineralogy XII: Applications to Environment, Precious Metals, Mineral Beneficiation, Pyrometallurgy, Coal and Refractories. Warrendale, PA: Minerals, Metals & Materials Society, 1994.
Παραπομπή MLAPetruk, William, and Albert R. Rule. Process Mineralogy XII: Applications to Environment, Precious Metals, Mineral Beneficiation, Pyrometallurgy, Coal and Refractories. Warrendale, PA: Minerals, Metals & Materials Society, 1994.
Πρόσοχή: Οι παραπομπές μπορεί να μην είναι 100% ακριβείς.