TY  - BOOK
AU  - George, Darren
AU  - Mallery, Paul
TI  - SPSS for Windows Step by Step: A Simple Study Guide and Reference, 17.0 Update
SN  - 9788131762257
U1  - 519.5028 GEO/S 
PY  - 2011///
CY  - Delhi
PB  - Pearson
ER  -