Lepper, Mark R. and Greene, David <br/><br/>
The Hidden costs of reward  new perspectives on the psychology of human motivation 

 - London  John Wiley & Sons  1978 
 - xiii,262p. 
<br/><br/><label>ISBN: </label>047026487X   
<br/><br/><label>Subjects--Topical Terms: </label><br/>Economics
<br/><br/><label>Dewey Class. No.: </label>330  / LEP