NATIONAL PRODUCTIVITY COUNCIL. (1977). FUEL EFFICIENCY. NATIONAL PRODUCTIVITY COUNCIL.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रNATIONAL PRODUCTIVITY COUNCIL. FUEL EFFICIENCY. NEW DELHI: NATIONAL PRODUCTIVITY COUNCIL, 1977.
एमएलए (9वां संस्करण) प्रशस्ति पत्रNATIONAL PRODUCTIVITY COUNCIL. FUEL EFFICIENCY. NATIONAL PRODUCTIVITY COUNCIL, 1977.
चेतावनी: ये उद्धरण हमेशा 100% सटीक नहीं हो सकते हैं.