APA-čujuhus (7. p.)
Introductiuon to information systems / O'Brien,James A: Ata McGraw-Hill 658.4032 Ob13e12 12th ed (12th ed.).
Chicago-čujuhus (17. p.)
Introductiuon to Information Systems / O'Brien,James A: Ata McGraw-Hill 658.4032 Ob13e12 12th Ed. 12th ed.
MLA-čujuhus (9. p.)
Introductiuon to Information Systems / O'Brien,James A: Ata McGraw-Hill 658.4032 Ob13e12 12th Ed. 12th ed.
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