Não informado. (2004). American Engineer: The railway mechanical monthly. Simmons Boardman Publishing.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रNão informado. American Engineer: The Railway Mechanical Monthly. New York: Simmons Boardman Publishing, 2004.
एमएलए (8वां संस्करण) प्रशस्ति पत्रNão informado. American Engineer: The Railway Mechanical Monthly. Simmons Boardman Publishing, 2004.
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