TY  - BOOK
AU  - George, Darren
AU  - Mallery, Paul
TI  - SPSS for windows step by step : a simple guide and reference 13.0 update
SN  - 81-317-0394-0
CY  - New Delhi
KW  - Social science -- Statistical package
KW  - SPSS -- Data analysis
N1  - Includes bibliographical references and index
ER  -