Cita APA (7a ed.)
O'Brien, J. A. (2005). Introduction to information systems (12th ed.). McGraw Hill.
Cita Chicago Style (17a ed.)
O'Brien, James A. Introduction to Information Systems. 12th ed. Boston: McGraw Hill, 2005.
Cita MLA (9a ed.)
O'Brien, James A. Introduction to Information Systems. 12th ed. McGraw Hill, 2005.
Precaución: Estas citas no son 100% exactas.