Cita APA (7a ed.)

O Brien, J. A. (2007). Enterprise Information SystemsJames A. O Brien and George M. Marakas. McGraw-Hill.

Cita Chicago Style (17a ed.)

O Brien, James A. Enterprise Information SystemsJames A. O Brien and George M. Marakas. McGraw-Hill, 2007.

Cita MLA (8a ed.)

O Brien, James A. Enterprise Information SystemsJames A. O Brien and George M. Marakas. McGraw-Hill, 2007.