TY  - BOOK
AU  - George,Darren
AU  - Mallery,Paul
TI  - IBM SPSS statistics 23 step by step: a simple guide and reference 
SN  - 9780815366560
U1  - 005.55 22
KW  - SPSS (Computer file)
KW  - Social sciences
KW  - Statistical methods
KW  - Computer programs
N1  - Includes bibliographical references and index
ER  -