Krueger, Richard A. Focus groups : a practical guide for applied research / Richar d A. Krueger, Mary Anne Casey. - 4th ed. - Los Angeles : SAGE, c2009. - xviii, 219 p. : ill. ; 24 cm. Includes bibliographical references (p. 207-208) and indexes. ISBN: 9781412969475 (spiral) 1412969476 (spiral) LCCN: 2008-022451 Subjects--Topical Terms: Focus groups.Social sciences--Methodology. Dewey Class. No.: 361.6/1068