TY  - BOOK
AU  - DeVellis, Robert F.
TI  - Scale Development: theory and applications
SN  - 9781412980449
U1  - 003.72 DEV 
PY  - 2012///
CY  - New Delhi
PB  - Sage Publications India Pvt. Ltd
KW  - Scaling (Social sciences)
ER  -