Lepper M R <br/><br/>
Hidden costs of reward ; New perspectives on the psychology of Human motivation 

 - Hillsdale  Lawrence Erlbaum        1978 
 - xiii, 262p.  cm. 
<br/><br/><label>Standard No.: </label>81,359 
<br/><br/><label>Source: </label> Textual 
<br/><br/><label>Subjects--Topical Terms: </label><br/>PSYCHOLOGY
<br/><br/><label>Dewey Class. No.: </label>S:65, L81