TY  - BOOK
AU  - O'Brien, James A 
TI  - Introduction to information systems / James A. O'Brien. - 12th ed
SN  - 0071112138
U1  - 658.4038 OBR 
CY  - Boston : McGraw-Hill/Irwin, c2005.
KW  - Business--Data processing. Management--Data processing. Management information systems. Electronic commerce
ER  -