Dyfyniad APA

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

Dyfyniad Arddull Chicago

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

Dyfyniad MLA

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

Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.