Organisation, I. C. S. (1976). Annual Survey of Industries: 1968 - Census sector. The author.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रOrganisation, India. Central Statistical. Annual Survey of Industries: 1968 - Census Sector. The author, 1976.
एमएलए (9वां संस्करण) प्रशस्ति पत्रOrganisation, India. Central Statistical. Annual Survey of Industries: 1968 - Census Sector. The author, 1976.
चेतावनी: ये उद्धरण हमेशा 100% सटीक नहीं हो सकते हैं.