Não informado. (1905). Quarterly of the Colorado School of Mines. Colorado School of Mines Press.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रNão informado. Quarterly of the Colorado School of Mines. Golden, Colo: Colorado School of Mines Press, 1905.
एमएलए (8वां संस्करण) प्रशस्ति पत्रNão informado. Quarterly of the Colorado School of Mines. Colorado School of Mines Press, 1905.
चेतावनी: ये उद्धरण हमेशा 100% सटीक नहीं हो सकते हैं.