Laudon, Kenneth C. Essentials of management information systems : managing the digital firm / Kenneth C. Laudon, Jane P. Laudon. - 6th ed. - Upper Saddle River, NJ : Pearson Educ., 2005. - xxviii, 636 p. ISBN: 0131273116 : KES 1,760 Subjects--Topical Terms: Management information systems. LC Class. No.: T58.6 / .L38 2005