REFERENCES
- Tizard , B. and Hughes , M. 1984 . Young Children Learning: talking and thinking at home and at school , London : Fontana .
- Wells , G. 1985 . Language, Learning and Education , Windsor : NFER-Nelson .
- Wood , D.J. , Wood , H.A. , Griffiths , A.J.H. and Howarth , C.I. 1986 . Teaching and Talking with Deaf Children , Chichester : John Wiley .