O'Brien, James A Management information system : a managerial end user perspective / James A O'Brien - 2nd ed. - Boston : Irwin, c1993. - ix, 400 p. ; ill. ; 25 cm. ISBN: 9780256107838 LCCN: Subjects--Topical Terms: Management information systems. LC Class. No.: T58.6 / .O26 1993