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2. What works in prison education?;Duguid;Adult Education,1987
3. Learning without limits;Hart,2004
4. Hillier, Y. Cunningham, L. & Cherry, C. (2008) Integrated learning and skills for offenders: evaluating the inmates' perspective.
5. Individuals, communities of practice and the policy context: school teachers' learning in their work place;Hodkinson;Studies in Continuing Education,2003