APA استشهاد

Barbour, R. (2007). Doing focus groups. Sage publications.

استشهاد بنمط شيكاغو

Barbour, Rosaline. Doing Focus Groups. Los Angeles: Sage publications, 2007.

MLA استشهاد

Barbour, Rosaline. Doing Focus Groups. Sage publications, 2007.