TY  - BOOK
AU  - Robert F DeVellis
TI  - Scale development: theory and applications
SN  - 9780761926054
U1  - 300.72 
PY  - 2003///
CY  - New Delhi
PB  - Sage
KW  - Research Methodology Social Sciences
KW  - Scaling Social Sciences
KW  - Social Sciences
ER  -