Winters, H. J. (1981). Financial outlook for western United States porphyry copper mines. Mining Engineering, 33, 1243.
Chicago Style (17th ed.) CitationWinters, H. J. "Financial Outlook for Western United States Porphyry Copper Mines." Mining Engineering 33 (1981): 1243.
MLA (9th ed.) CitationWinters, H. J. "Financial Outlook for Western United States Porphyry Copper Mines." Mining Engineering, vol. 33, 1981, p. 1243.
Warning: These citations may not always be 100% accurate.