Laudon, K. C., & Laudon, J. P. (2002). Management information systems: Managing the digital firm (7th ed.). Prentice Hall ; Pearson Education.

Laudon, Kenneth C., and Jane Price Laudon. Management Information Systems: Managing the Digital Firm. 7th ed. Upper Saddle River, N.J. : New Delhi: Prentice Hall ; Pearson Education, 2002.

Laudon, Kenneth C., and Jane Price Laudon. Management Information Systems: Managing the Digital Firm. 7th ed. Prentice Hall ; Pearson Education, 2002.