Não informado. (1953). Railway Track and Structures. Simmons Boardman Publishing.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रNão informado. Railway Track and Structures. Bristol, Conn: Simmons Boardman Publishing, 1953.
एमएलए (8वां संस्करण) प्रशस्ति पत्रNão informado. Railway Track and Structures. Simmons Boardman Publishing, 1953.
चेतावनी: ये उद्धरण हमेशा 100% सटीक नहीं हो सकते हैं.