APA-viite (7. p.)

Krueger, R. A. (1994). Focus groups: A practical guide for applied research (2nd ed.). Sage Publications.

Chicago-viite (17. p.)

Krueger, Richard A. Focus Groups: A Practical Guide for Applied Research. 2nd ed. Thousand Oaks, Calif.: Sage Publications, 1994.

MLA-viite (8. p.)

Krueger, Richard A. Focus Groups: A Practical Guide for Applied Research. 2nd ed. Sage Publications, 1994.