TY  - BOOK
AU  - DeVellis, Robert F.
TI  - Scale development: theory and applications
T2  - Applied social Research methods series
SN  - 0803937768
U1  - 300.72 
PY  - 1991///
CY  - Newbury Park
PB  - Sage
KW  - Scaling(Social Sciences)
ER  -