APA (7th ed.) Citation

Krueger, R. A., & Casey, M. A. (2015). Focus groups: A practical guide for applied research (5th ed.). SAGE.

Chicago Style (17th ed.) Citation

Krueger, Richard A., and Mary Anne Casey. Focus Groups: A Practical Guide for Applied Research. 5th ed. Los Angeles [etc.]: SAGE, 2015.

MLA (9th ed.) Citation

Krueger, Richard A., and Mary Anne Casey. Focus Groups: A Practical Guide for Applied Research. 5th ed. SAGE, 2015.