India. Labour and Rehabilitation, M. o. (1973). Statistics of mines in India: 1970. The author.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रIndia. Labour and Rehabilitation, Ministry of. Statistics of Mines in India: 1970. The author, 1973.
एमएलए (9वां संस्करण) प्रशस्ति पत्रIndia. Labour and Rehabilitation, Ministry of. Statistics of Mines in India: 1970. The author, 1973.
चेतावनी: ये उद्धरण हमेशा 100% सटीक नहीं हो सकते हैं.