Não informado. (1948). Columbia Engineering Quarterly. Columbia University, Faculty of Engineering, School of Engineering.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रNão informado. Columbia Engineering Quarterly. New York: Columbia University, Faculty of Engineering, School of Engineering, 1948.
एमएलए (8वां संस्करण) प्रशस्ति पत्रNão informado. Columbia Engineering Quarterly. Columbia University, Faculty of Engineering, School of Engineering, 1948.
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