Beck, Robert Clarence. <br/><br/>
Motivation :  theories and principles / 
Robert C. Beck. 
 - 3rd ed. 
 - Englewood Cliffs, NJ. :  Prentice Hall,  c1990. 
 - xii, 414 p. ;  24 cm. 
<br/><br/><label>ISBN: </label>0136030777 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Motivation (Psychology)
<br/><br/><label>Dewey Class. No.: </label>153.8  / BEC