Cita APA (7th ed.)

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

Cita Chicago (17th ed.)

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

Cita MLA (8th ed.)

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