Não informado. (1919). Transactions of the American Institute of Mining and Metallurgical Engineers. American Institute of Mining and Metallurgical Engineers.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रNão informado. Transactions of the American Institute of Mining and Metallurgical Engineers. New York: American Institute of Mining and Metallurgical Engineers, 1919.
एमएलए (8वां संस्करण) प्रशस्ति पत्रNão informado. Transactions of the American Institute of Mining and Metallurgical Engineers. American Institute of Mining and Metallurgical Engineers, 1919.
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