Não informado. (1981). Diesel and gas turbine worldwide. Diesel & Gas Turbine Publications.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रNão informado. Diesel and Gas Turbine Worldwide. Brookfield, Wis: Diesel & Gas Turbine Publications, 1981.
एमएलए (8वां संस्करण) प्रशस्ति पत्रNão informado. Diesel and Gas Turbine Worldwide. Diesel & Gas Turbine Publications, 1981.
चेतावनी: ये उद्धरण हमेशा 100% सटीक नहीं हो सकते हैं.