Dyfyniad APA

Barbour,Rosaline. (2010). Doing focus groups. Sage publications.

Dyfyniad Arddull Chicago

Barbour,Rosaline. Doing Focus Groups. NewDelhi: Sage publications, 2010.

Dyfyniad MLA

Barbour,Rosaline. Doing Focus Groups. Sage publications, 2010.

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