Krueger, Richard A. Focus groups : a practical guide for applied research / Richard A. Krueger. - 4th ed. - New Delhi: SAGE Publications, 2009. - xviii, 219p.; ill. : 23cm. Includes bibliographical references. ISBN: 9781412969475 Subjects--Topical Terms: Focus groupsSocial sciences--Methodology Dewey Class. No.: 361.61068 / KRU