APA ציטוט

O'Brien, J. A. (1994). Introduction to information systems (7th ed.). Irwin.

Chicago Style (17th ed.) Citation

O'Brien, James A. Introduction to Information Systems. 7th ed. Burr Ridge, Ill.: Irwin, 1994.

ציטוט MLA

O'Brien, James A. Introduction to Information Systems. 7th ed. Irwin, 1994.