Não informado. (1908). Proceedings of the Mining and Metallurgical Society of America. Office of the Secretary Mining and Metallurgical Society of America.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रNão informado. Proceedings of the Mining and Metallurgical Society of America. New York: Office of the Secretary Mining and Metallurgical Society of America, 1908.
एमएलए (8वां संस्करण) प्रशस्ति पत्रNão informado. Proceedings of the Mining and Metallurgical Society of America. Office of the Secretary Mining and Metallurgical Society of America, 1908.
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