APA aipamena

Barbour, R. S., & Flick, U. (2018). Doing focus groups (2nd edition.). Sage.

Chicago Style aipamena

Barbour, Rosaline S., and Uwe Flick. Doing Focus Groups. 2nd edition. Los Angeles: Sage, 2018.

MLA aipamena

Barbour, Rosaline S., and Uwe Flick. Doing Focus Groups. 2nd edition. Sage, 2018.