Beck, Robert C. <br/><br/>
Motivations   theories and principles  [Book] 
Robert C. Beck. 
 - 4th ed. 
 -  Pearson Education Singapore 
<br/><br/> All. 
<br/><br/><label>ISBN: </label>8129700875 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Motivation (Psychology)
<br/><br/><label>Dewey Class. No.: </label>153.8