Lua APA (7ú heag.)

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

Lua i Stíl Chicago (17ú heag.)

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

Lua MLA (9ú heag.)

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

Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.