O'Leary, T. J. (1989). Computers and information systems. Redwood City, California: Benjamin/Cummings.
Chicago Style aipamenaO'Leary, Tymothy J. Computers and Information Systems. Redwood City, California: Benjamin/Cummings, 1989.
MLA aipamenaO'Leary, Tymothy J. Computers and Information Systems. Redwood City, California: Benjamin/Cummings, 1989.
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