Personal effectiveness:  guiding people to assert themselves and improve their social skills/ 
by Robert Paul Liberman, Larry King, William J. DeRisi and Michael McCann. 
 - Champaign, Ill.:  Research press,  1975. 
 - 169 pages ;   22 cm. 
<br/><br/><label>ISBN: </label>0878221638 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Effectiveness.