O´Brien, J. A., & Marakas, G. M. (2007). Introduction to information systems (13th ed.). McGraw-Hill.
Chicago-čujuhus (17. p.)O´Brien, James A., juo George M. Marakas. Introduction to Information Systems. 13th ed. Boston, MA: McGraw-Hill, 2007.
MLA-čujuhus (9. p.)O´Brien, James A., juo George M. Marakas. Introduction to Information Systems. 13th ed. McGraw-Hill, 2007.
Muitte dárkkistit čujuhemiid riektatvuođa, ovdal go geavahat daid iežat deavsttas.