Toseland, Ronald W. An introduction to group work practice / Ronald W. Toseland, Robe rt F. Rivas. - 6th ed. - Boston : Pearson/Allyn and Bacon, c2009. - xix, 537 p. ; ill. ; 24 cm. Includes bibliographical references (p. 485-521) and indexes. ISBN: 13:9780205593828 10:0205593828 Subjects--Topical Terms: Social group work. Dewey Class. No.: 361.4