Ashdown, R., Carpenter, B., & Bovair, K. (2019). The Curriculum challenge: Access to the national curriculum for pupils with learning difficulties. Routledge, Falmer Press.

Ashdown, Rob, Barry Carpenter, and Keith Bovair. The Curriculum Challenge: Access to the National Curriculum for Pupils with Learning Difficulties. London ; New York: Routledge, Falmer Press, 2019.

Ashdown, Rob, et al. The Curriculum Challenge: Access to the National Curriculum for Pupils with Learning Difficulties. Routledge, Falmer Press, 2019.