Não informado. (2004). Railway Mechanical Engineer. Simmons Boardman Publishing.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रNão informado. Railway Mechanical Engineer. Philadelphia, Pa: Simmons Boardman Publishing, 2004.
एमएलए (8वां संस्करण) प्रशस्ति पत्रNão informado. Railway Mechanical Engineer. Simmons Boardman Publishing, 2004.
चेतावनी: ये उद्धरण हमेशा 100% सटीक नहीं हो सकते हैं.