Gaya APA

Cotterill, C, H, &, C, J, M. (1970). AIME World Symposium on Mining & Metallurgy of Lead & Zinc Volume II: Extractive Metallurgy of Lead & Zinc . United States of America: The American Institute of Mining and Metallurgical Engineers.

Gaya MLA

Cotterill, Carl, H., &, Cigan,, John, M.. "AIME World Symposium on Mining & Metallurgy of Lead & Zinc Volume II: Extractive Metallurgy of Lead & Zinc". United States of America: The American Institute of Mining and Metallurgical Engineers, 1970. Text.