O`BRIEN JAMES A. (2007). MANAGEMENT INFORMATION SYSTMS (7TH.). TATA MCGRAW-HILL PUBLISHING COMPANY LIMITED.
Chicago-viite (17. p.)O`BRIEN JAMES A. MANAGEMENT INFORMATION SYSTMS. 7TH. NEW DELHI: TATA MCGRAW-HILL PUBLISHING COMPANY LIMITED, 2007.
MLA-viite (9. p.)O`BRIEN JAMES A. MANAGEMENT INFORMATION SYSTMS. 7TH. TATA MCGRAW-HILL PUBLISHING COMPANY LIMITED, 2007.
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