Cita APA (7a ed.)

Krueger, R. A. (2000). Focus groups: A practical guide for applied research (3rd ed.). Sage Publications.

Cita Chicago Style (17a ed.)

Krueger, Richard A. Focus Groups: A Practical Guide for Applied Research. 3rd ed. Thousand Oaks: Sage Publications, 2000.

Cita MLA (9a ed.)

Krueger, Richard A. Focus Groups: A Practical Guide for Applied Research. 3rd ed. Sage Publications, 2000.