Stanford, Gene, <br/><br/>
Developing effective classroom groups :  a practical guide for teachers / 
Gene Stanford. 
 - New York :  A and W Visual Library,  (c)1980. 
 - 287 pages :  illustrations ;  21 cm. 
<br/><br/> "A Hart Book". First published by Hart Publishing Company, Incorporated, New York, 1977. 
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<br/><br/><label>LCCN: </label>80065595 
<br/><br/><label>LC Class. No.: </label>LB1032  / .D484 1980 LB1032