Hopkins, D. (1989). Evaluation for school development. Open University Press.
Lua i Stíl Chicago (17ú heag.)Hopkins, David. Evaluation for School Development. Milton Keynes [England] ; Philadelphia: Open University Press, 1989.
Lua MLA (8ú heag.)Hopkins, David. Evaluation for School Development. Open University Press, 1989.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.