(1963). Directory of special libraries and information centers. Gale Research.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रDirectory of Special Libraries and Information Centers. Detroit: Gale Research, 1963.
एमएलए (9वां संस्करण) प्रशस्ति पत्रDirectory of Special Libraries and Information Centers. Gale Research, 1963.
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