O'Brien, James A., 1936- Introduction to information systems : essentials for the E-business enterprise / James A. O'Brien. - 11th ed. - Boston : McGraw-Hill/Irwin, c2003. - 1 v. (various pagings) : col. ill. ; 29 cm. ISBN: 0072472642 (alk. paper) LCCN: 2001054663 LC Class. No.: HF5548.2 .O23 2003 / .O23 2003 Dewey Class. No.: 658.4/038