Books by Gordon B. Willis
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-20%
Cognitive Interviewing: A Tool for Improving Questionnaire Design
€288.92
€361.15
-20% with code BOOKS
In stock at our supplier
-20%
Cognitive Interviewing: A Tool for Improving Questionnaire Design
€415.18
€518.98
-20% with code BOOKS
In stock at our supplier
-20%
Question Evaluation Methods: Contributing to the Science of Data Quality
Gordon B Willis, Aaron Maitland, Jennifer Madans, Kristen Miller
€150.06
€187.57
-20% with code BOOKS
In stock at our supplier