APA (7th ed.) Citation

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

Chicago Style (17th ed.) Citation

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

MLA (9th ed.) Citation

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