Skemp, Richard R. <br/><br/>
The psychology of learning mathematics 
Richard R. Skemp 
 - Harmondsworth :  Penguin Books,  [1971]. 
 - 319 p. 
<br/><br/><label>ISBN: </label>0140212108 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Mathematics--Study and teaching
<br/><br/><label>LC Class. No.: </label>QA11