Cita APA (7th ed.)

Barbour, R. S., & Flick, U. (2007). Doing focus groups. SAGE.

Cita Chicago (17th ed.)

Barbour, Rosaline S., i Uwe Flick. Doing Focus Groups. Los Angeles: SAGE, 2007.

Cita MLA (9th ed.)

Barbour, Rosaline S., i Uwe Flick. Doing Focus Groups. SAGE, 2007.