Richard A Krueger. (1997). Moderating focus groups 4. Sage.
Chicago Edition CitationRichard A Krueger. Moderating Focus Groups 4. New Delhi: Sage, 1997.
Cita MLARichard A Krueger. Moderating Focus Groups 4. Sage, 1997.
Atenció: Aquestes cites poden no estar 100% correctes.