Williams - Osula, K. (2013). A Computerized System for Managing Overdue Books in University Libraries. Nigerian Library Association.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रWilliams - Osula, K.O. A Computerized System for Managing Overdue Books in University Libraries. Nigerian Library Association, 2013.
एमएलए (9वां संस्करण) प्रशस्ति पत्रWilliams - Osula, K.O. A Computerized System for Managing Overdue Books in University Libraries. Nigerian Library Association, 2013.
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