O`BRIEN JAMES A. (2002). MANAGEMENT INFORMATION SYSTEMS AND C.D (5TH.). TATA MCGRAW-HILL PUBLISHING COMPANY.
Lua i Stíl Chicago (17ú heag.)O`BRIEN JAMES A. MANAGEMENT INFORMATION SYSTEMS AND C.D. 5TH. NEW DELHI: TATA MCGRAW-HILL PUBLISHING COMPANY, 2002.
Lua MLA (9ú heag.)O`BRIEN JAMES A. MANAGEMENT INFORMATION SYSTEMS AND C.D. 5TH. TATA MCGRAW-HILL PUBLISHING COMPANY, 2002.
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