APA aipamena

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

Chicago Style aipamena

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

MLA aipamena

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

Kontuz: berrikusi erreferentzia hauek erabili aurretik.