References:
- Hagell , A. and Newburn , T. 1994 . Persistent Young Offenders , London : Policy Studies Institute .
- Graham , J. and Bowling , B. 1995 . Young People and Crime , London : Home Office .
- Covey , S.R , Merrill , A.R. and Merrill , R.R. 1994 . First Things First , New York : Simon and Schuster .