Johnson, David W., 1940- Joining together : group theory and group skills / David W. Johnson, Frank P. Johnson. - 7th ed. - Boston : Allyn and Bacon, c2000. - xii, 643 p. : ill. ; 23 cm. Includes bibliographical references (p. 599-622) and index. ISBN: 0205308597 LCCN: 99025920 Subjects--Topical Terms: Group relations trainingLeadershipSocial groups