1. Bartlett, F. C. (1932). Remembering, University Press, Cambridge
2. Bernstein, B. (1961). Social structure, language, and learning. Educ. Res. iii, 163–76
3. Bernstein, B. (1962). Social class, linguistic codes and grammatical elements. Lang. Speach v, 221–40
4. Biggs, J. B. (1968. Information and Human Learning, Cassell Australia, Melbourne
5. Brandis, W., and Henderson, D. (1970). Social Class, Language and Communication, Routledge & Kegan Paul, London