O.Brien, J. A. (2001). Introduction to information systems: Essentials for the internetworked E-business enterprise (10th ed.). McGraw-Hill/Irwin.
Citace podle Chicago (17th ed.)O.Brien, James A. Introduction to Information Systems: Essentials for the Internetworked E-business Enterprise. 10th ed. Boston: McGraw-Hill/Irwin, 2001.
Citace podle MLA (9th ed.)O.Brien, James A. Introduction to Information Systems: Essentials for the Internetworked E-business Enterprise. 10th ed. McGraw-Hill/Irwin, 2001.
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