Citazione Stile APA (7a Edizione)

O'Brien, J. A. (1997). Introduction to information systems (8th ed.). Irwin.

Citazione stile Chigago Style (17a edizione)

O'Brien, James A. Introduction to Information Systems. 8th ed. Boston ; Chicago: Irwin, 1997.

Citatione MLA (8a ed.)

O'Brien, James A. Introduction to Information Systems. 8th ed. Irwin, 1997.