TY  - BOOK
AU  - DeVellis,Robert F.
AU  - Thorpe,Carolyn T.
TI  - Scale development: theory and applications 
SN  - 9781544379340
U1  - 300.72 DEV(SCA)Ed5 
PY  - 2022///
CY  - New Delhi 
PB  - Sage 
KW  - Scaling (Social sciences)
ER  -