Johnson, David W.,  1940-, <br/><br/>
Joining together:  group theory and group skills / 
David W. Johnson, Frank P. Johnson. 
 - 4th edition. 
 - xii, 530 pages :  illustrations ;  24 cm. 
<br/><br/><label>ISBN: </label>0135085160  Hadiah 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Social groups.<br/>Leadership.<br/>Group relations training.