Book

Singleton, David and Lengyel, Zsolt, eds. (1995) The age factor in second language acquisition: a critical look at the critical period hypothesis. Multilingual matters . Multilingual Matters, Clevedon. ISBN ISBN 1-85359-301-X

Daugherty, Richard (1995) National Curriculum Assessment: A Review of Policy 1987-1994. The Falmer Press (Taylor & Francis Group), Bristol. ISBN 0-203-42161-2