TY  - BOOK
AU  - Valacich, Joseph S  .
TI  - Essentials of systems analysis and design / 
SN  - 978-81-203-4558-4
U1  - BV 
PY  - 2012///
CY  - New Delhi : 
PB  - PHI Learning Private Ltd. , 
KW  - Computer- System analysis and design
ER  -