John Clements & Ewa Zarkowska 
Problem Behaviour and People with Severe Learning Disabilities [PDF ebook] 
The S.T.A.R Approach

First published in 1994. This book is a practical guide for those involved in the daily care, education and development of people with learning disabilities and additional behavioural and emotional disturbances. It will assist professional helpers in understanding the nature of an individual’s difficulties and in developing interventions aimed at alleviating them.