Communiqués par Gordon B. Willis

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Cover for Gordon B. Willis · Cognitive Interviewing: A Tool for Improving Questionnaire Design (Hardcover Book) (2005)

Cognitive Interviewing: A Tool f... (2005)

Gordon B. Willis

Cover for Gordon B. Willis · Cognitive Interviewing: A Tool for Improving Questionnaire Design (Paperback Book) (2004)

Cognitive Interviewing: A Tool f... (2004)

Gordon B. Willis