Encyclopedia of education / 
editor in chief James W. Guthrie 
 - 2 
 - New York :  Macmillan Reference USA,  2003       
 - 8 v. 
<br/><br/><label>ISBN: </label>002865594X 
<br/><br/><label>LC Class. No.: </label>R LB 15 E56 2003