APA stil citiranja
Willis, G. B. (2005). Cognitive interviewing: Cognitive interviewing : a tool for improving questionnaire design. Thousand Oaks, CA: Sage publications.
Chicago stil citiranjaWillis, Gordon B. Cognitive interviewing: Cognitive interviewing : a tool for improving questionnaire design. Thousand Oaks, CA: Sage publications, 2005.
MLA stil citiranjaWillis, Gordon B. Cognitive interviewing: Cognitive interviewing : a tool for improving questionnaire design. Thousand Oaks, CA: Sage publications, 2005.
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