TY  - BOOK
AU  - Haag, Stephen
AU  - Cummings, Maeve
TI  - Information systems essentials.
SN  - 9780071285490
AV  - T 58.6  .H17 2008
PY  - 2009///
CY  - Boston
PB  - McGraw-Hill Irwin
KW  - Information system
KW  - Information technology
ER  -