Cita APA (7a ed.)

O'Brien, J. A. (2005). Introduction to information systems (12th ed.). McGraw-Hill/Irwin.

Cita Chicago Style (17a ed.)

O'Brien, James A. Introduction to Information Systems. 12th ed. Boston: McGraw-Hill/Irwin, 2005.

Cita MLA (9a ed.)

O'Brien, James A. Introduction to Information Systems. 12th ed. McGraw-Hill/Irwin, 2005.