TY  - GEN
AU  - Saris,  Willem E. 
AU  -  Gallhofer, Irmtraud N.
TI  - Design, Evaluation, and analysis of questionnaires for survey research 
SN  - 9780470165195
PY  - 2007///
PB  - Wiley & Sons
KW  - Survey Research Methods & Sampling
UR  - http://onlinelibrary.wiley.com/book/10.1002/9780470165195
ER  -