Whittaker, K. (1993). The Basics of library-based user services. Library Association.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रWhittaker, Kenneth. The Basics of Library-based User Services. Library Association, 1993.
एमएलए (8वां संस्करण) प्रशस्ति पत्रWhittaker, Kenneth. The Basics of Library-based User Services. Library Association, 1993.
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