Petri, Herbert L. <br/><br/>
Motivation : Theory, research and applications. 

 - 3rd  ed. 
 - Belmont, California :  Wadsworth,  1991. 
 - xiv, 434  p. 
<br/><br/>Includes bibliography and index. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Motivation (psychology)
<br/><br/><label>LC Class. No.: </label>BF503  / .P47