Sundel, Martin, 1940- Behavior change in the human services : behavioral and cognitive principles and applications / Martin Sundel, Sandra S. Sundel. - Sixth edition. - 449 pages ; 25 cm. $ 95/-TRP40/29 Includes bibliographical references and index. ISBN: 9781483384610 (pbk.) Subjects--Topical Terms: Behavior modification. Dewey Class. No.: 153.85 SUN