TY  - BOOK
AU  - O'Brien, James A; Marakas, George M; Behl, Ramesh
TI  - Management information systems. 9th ed
U1  - 658.40388/O'br 
PY  - 2011///
CY  - New Delhi
PB  - Tata McGraw hill education private limited
N1  - NTB; UG
ER  -