The social psychology of teaching :  selected readings / 
edited by A. Morrison and D. McIntyre 
 - Harmondsworth :  Penguin Education,  1972 
 - 367 p. :  ill. ;  18 cm. 
<br/><br/>p. 345-350 
<br/><br/><label>ISBN: </label>0140805346 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Motivation in education<br/>Interaction analysis in education