TY  - GEN
AU  - Colton, David
AU  - Covert, Robert W.
TI  - Designing and constructing instruments for social research and evaluation
SN  - 9780787987848
U1  - 300.72 
PY  - 2007///
CY  - San Francisco
PB  - Wiley
N1  - Including index and reference
ER  -