Montana Bureau of Mines and Geology. Bulletin. Montana College of Mineral Science and Technology.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रMontana Bureau of Mines and Geology. Bulletin. Butte, Mont: Montana College of Mineral Science and Technology.
एमएलए (8वां संस्करण) प्रशस्ति पत्रMontana Bureau of Mines and Geology. Bulletin. Montana College of Mineral Science and Technology.
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