TY  - BOOK
AU  - Devellis, Robert F. ,
TI  - Scale development: theory and applications
T2  - Applied social research methods series ; 26
SN  - 9781412980449
U1  - 300.72 DEV  
PY  - 2012///
CY  - London
PB  - Sage Publications
KW  - Social sciences
KW  - Scaling
N1  - Includes bibliographical references and index
ER  -