TY  - BOOK
AU  - Sudman,Seymour
AU  - Bradburn,Norman M.
TI  - Asking questions
SN  - 0875895468
PY  - 1982///
CY  - San Francisco
PB  - Jossey-Bass
KW  - Social sciences
KW  - Research
KW  - Questionnaires
ER  -