Montana Bureau of Mines and Geology, Mining Association of Montana, & Mineral resources survey. (1940). Directory of Montana mining properties. Montana School of Mines.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रMontana Bureau of Mines and Geology, Mining Association of Montana, और Mineral resources survey. Directory of Montana Mining Properties. Butte, Mont.: Montana School of Mines, 1940.
एमएलए (8वां संस्करण) प्रशस्ति पत्रMontana Bureau of Mines and Geology, et al. Directory of Montana Mining Properties. Montana School of Mines, 1940.
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