India. Finance, M. o. (1981). Public enterprises survey, 1980-81: Annual repaort on the working of industrial and commercial undertakings of the Central Government. The author.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रIndia. Finance, Ministry of. Public Enterprises Survey, 1980-81: Annual Repaort on the Working of Industrial and Commercial Undertakings of the Central Government. The author, 1981.
एमएलए (9वां संस्करण) प्रशस्ति पत्रIndia. Finance, Ministry of. Public Enterprises Survey, 1980-81: Annual Repaort on the Working of Industrial and Commercial Undertakings of the Central Government. The author, 1981.
चेतावनी: ये उद्धरण हमेशा 100% सटीक नहीं हो सकते हैं.