Krueger, R. A. (1988). Focus groups: A practical guide for applied research. Sage Publications.
Chicago Style (17. basım) AtıfKrueger, Richard A. Focus Groups: A Practical Guide for Applied Research. Newbury Park, Calif.: Sage Publications, 1988.
MLA (8th ed.) AtıfKrueger, Richard A. Focus Groups: A Practical Guide for Applied Research. Sage Publications, 1988.
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