Cofer, C N,  Appley,  M H <br/><br/>
Motivation : theory and research 

 - John Wiley, New Delhi  1968 
 - 958p 
<br/><br/><label>ISBN: </label>0-85226-123-3 
<br/><br/><label>Dewey Class. No.: </label>159.4 Cof/App