APA (7e ed.) Bronvermelding

Krueger, R. A. (1988). Focus groups: A practical guide for applied research. Sage Publications.

Chicago (17e ed.) Bronvermelding

Krueger, Richard A. Focus Groups: A Practical Guide for Applied Research. Newbury Park, Calif.: Sage Publications, 1988.

MLA (8e ed.) Bronvermelding

Krueger, Richard A. Focus Groups: A Practical Guide for Applied Research. Sage Publications, 1988.