Walker, Stephen. <br/><br/>
Learning theory and behaviour modification / 
Stephen Walker. 
 - London :  Methuen,  1984, 
 - 184 p. :  ill. ;  20 cm. 
 - New essential psychology. .
 - New essential psychology. .
<br/><br/>p. 164-177. 
<br/><br/><label>ISBN: </label>0416338100 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Learning