Citazione Stile APA (7a Edizione)

O'Brien, J. A. (1997). Introduction to information systems (8thed.). McGraw-Hill.

Citazione stile Chigago Style (17a edizione)

O'Brien, James A. Introduction to Information Systems. 8thed. Boston, Mass.: McGraw-Hill, 1997.

Citatione MLA (9a ed.)

O'Brien, James A. Introduction to Information Systems. 8thed. McGraw-Hill, 1997.