APA استشهاد

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

استشهاد بنمط شيكاغو

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

MLA استشهاد

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