Morgan, D. L. (1997). Focus groups as qualitative research (2nd edition.). Sage Publications.
Chicago-Zitierstil (17. Ausg.)Morgan, David L. Focus Groups as Qualitative Research. 2nd edition. Thousand Oaks, California: Sage Publications, 1997.
MLA-Zitierstil (9. Ausg.)Morgan, David L. Focus Groups as Qualitative Research. 2nd edition. Sage Publications, 1997.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.