Laudon, K. C., & Laudon, J. P. (2004). Essentials of management information systems: Managing the digital firm (6th ed.). Prentice Hall.

Laudon, Kenneth C., and Jane Price Laudon. Essentials of Management Information Systems: Managing the Digital Firm. 6th ed. Upper Saddle River, NJ: Prentice Hall, 2004.

Laudon, Kenneth C., and Jane Price Laudon. Essentials of Management Information Systems: Managing the Digital Firm. 6th ed. Prentice Hall, 2004.