O.Brien, J. A. (2000). Introduction to information systems: Essentials for the internetworked enterprise (9th ed.). Irwin/McGraw-Hill.
Citazione stile Chigago Style (17a edizione)O.Brien, James A. Introduction to Information Systems: Essentials for the Internetworked Enterprise. 9th ed. Boston: Irwin/McGraw-Hill, 2000.
Citatione MLA (9a ed.)O.Brien, James A. Introduction to Information Systems: Essentials for the Internetworked Enterprise. 9th ed. Irwin/McGraw-Hill, 2000.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.