TY  - BOOK
AU  - George,Darren
AU  - Mallery,Paul
TI  - SPSS for Windows step by step: a simple guide and reference 18.0 update 
SN  - 9789332518124
U1  - 005.55 22
PY  - 2011///
CY  - Boston, MA
PB  - Allyn & Bacon/Pearson
KW  - SPSS for Windows
KW  - Social sciences
KW  - Statistical methods
KW  - Computer programs
N1  - Includes bibliographical references and index
ER  -