TY  - GEN
AU  - WHITTEN, J.L.
AU  - BENTLEY, L.D. & DITTMAN, K.C.
TI  - Systems Analysis and Design Methods
SN  - 0-07-231539-3
U1  - 004.21 WHI 
PY  - 2000///
CY  - New york
PB  - Mc Graw-Hill
ER  -