Não informado. (1930). Civil Engineering. American Society of Civil Engineers.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रNão informado. Civil Engineering. New York: American Society of Civil Engineers, 1930.
एमएलए (8वां संस्करण) प्रशस्ति पत्रNão informado. Civil Engineering. American Society of Civil Engineers, 1930.
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