Chopra, H. (1999). Library information technology in modern era: Libraries and librarians in new millenium. Commonwealth.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रChopra, H.S. Library Information Technology in Modern Era: Libraries and Librarians in New Millenium. New Delhi: Commonwealth, 1999.
एमएलए (9वां संस्करण) प्रशस्ति पत्रChopra, H.S. Library Information Technology in Modern Era: Libraries and Librarians in New Millenium. Commonwealth, 1999.
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