of, I. L. M. (1975). Directory of qualifications recognised by Government of India. The author.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रof, India. Labour Ministry. Directory of Qualifications Recognised by Government of India. The author, 1975.
एमएलए (9वां संस्करण) प्रशस्ति पत्रof, India. Labour Ministry. Directory of Qualifications Recognised by Government of India. The author, 1975.
चेतावनी: ये उद्धरण हमेशा 100% सटीक नहीं हो सकते हैं.