Walker, Hill M., <br/><br/>
Técnicas de reforzamiento con fichas 
Hill M. Walker, Nancy K. Buckley. 
 - Barcelona  Editorial Fontanella  1976. 
 - 272 p.  ill. 
 - Conducta humana .
<br/><br/> Translation of Token reinforcement techniques; classroom applications for the hard-to-teach child. 
<br/><br/>Includes bibliographical references. 
<br/><br/><label>ISBN: </label>8424403932 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Rewards and punishments in education.<br/>Problem children--Education.