OBrien, James A. Management information systems : a managerial end user perspective / James A. OBrien - 2nd ed. - Illinois : Irwin, c1993. - xxxiv,571 p. : ill. ; 26 cm. Includes index. ISBN: 0256103461 LCCN: Subjects--Topical Terms: ManagementInformation systems LC Class. No.: HF5548 / .32 1993 Dewey Class. No.: 658.4038011 / O13m