Cita APA (7th ed.)

O`BRIEN JAMES A. (2005). INTRODUCTION TO INFORMATION SYSTEMS (12TH ED.). TATA MCGRAW-HILL PUBLISHING COMPANY LIMITED.

Cita Chicago (17th ed.)

O`BRIEN JAMES A. INTRODUCTION TO INFORMATION SYSTEMS. 12TH ED. NEW DELHI: TATA MCGRAW-HILL PUBLISHING COMPANY LIMITED, 2005.

Cita MLA (9th ed.)

O`BRIEN JAMES A. INTRODUCTION TO INFORMATION SYSTEMS. 12TH ED. TATA MCGRAW-HILL PUBLISHING COMPANY LIMITED, 2005.