Cita APA (7th ed.)

O'Brien, J. A. (2003). Introduction to information systems (11th ed.). McGraw-Hill.

Cita Chicago (17th ed.)

O'Brien, James A. Introduction to Information Systems. 11th ed. Boston: McGraw-Hill, 2003.

Cita MLA (9th ed.)

O'Brien, James A. Introduction to Information Systems. 11th ed. McGraw-Hill, 2003.