Beck, Robert C.  <br/><br/>
Motivation :   theories and principles / 
Robert C. Beck. 
 - New Jersey :   Prentice Hall,   1990. 
<br/><br/>Includes bibliographical references and index 
<br/><br/><label>ISBN: </label>0136030777 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Motivation (Psychology)
<br/><br/><label>LC Class. No.: </label>BF 503 BEC 1990