TY  - BOOK
AU  - George, Darren
AU  - Mallery, Paul/
TI  - SPSS for wondows step by step: a simple guide and reference 17.0 update
U1  - 005.55  G294S 
PY  - 2011///
CY  - New Delhi
PB  - Pearson/Dorling Kindersley (India)
ER  -