Gaya APA

James, O, A., Marakas, G, M. (2007). INTRODUCTION TO INFORMATION SYSTEMS (13). New York: McGraw-Hll / Irwin.

Gaya MLA

James, O'Brien, A.,., Marakas, George, M. "INTRODUCTION TO INFORMATION SYSTEMS". 13 New York: McGraw-Hll / Irwin, 2007. Text.