Greenbaum, Thomas L. Moderating focus groups : a practical guide for group facilitation / Thomas L. Greenbaum - Thousand Oaks : Sage Publications, 2000 - 249 p. : ill. ; 23 cm. ISBN: 0761920447 RM127.05 LCCN: 99-006959 Subjects--Topical Terms: Focused group interviewingSocial sciences--Research