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 
PY  - 2016///
CY  - New York
PB  - Routledge, Taylor & Francis Grou
ER  -