Improving the long-term effects of psychotherapy :  models of durable outcome / 
edited by Paul Karoly and John J. Steffen. 
 - New York :  Gardner Press,  1980. 
 - 492 p. ;  24 cm. 
<br/><br/> Includes index. 
<br/><br/><label>ISBN: </label>0470268549 
<br/><br/><label>LCCN: </label>79-18430 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Psychotherapy.