TY  - BOOK
AU  - DeVellis, Robert F.
TI  - Scale development : : theory and applications / 
SN  - 9781412980449
U1  - 300.72 22
PY  - 2012///
CY  - Thousand Oaks, Calif. : 
PB  - SAGE Publishings, 
KW  - Applied social research
N1  - Include Index
ER  -