TY  - BOOK
AU  - Penn, Roger ,
AU  - Berridge, Damon,
TI  - Social statistics vol.IV : : statistical modelling of ordinal categorical data / 
SN  - 9781847873569
U1  - 300.727 
PY  - 2010///
CY  - New Delhi
PB  - Sage Publications
KW  - Social sciences
ER  -