Behaviour modification for people with mental handicaps 
Edited by William Yule and Janet Carr 
 - 2nd ed. 
 - Croom Helm : London  1987 
 - 356 p. : ill. ; 22 cm. 
<br/><br/><label>ISBN: </label>0709929188 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Behavior therapy<br/>Mental retardation--Rehabilitation