Não informado. (1977). Evaluation in Education International Progress. Pergamon Press.
Lua i Stíl Chicago (17ú heag.)Não informado. Evaluation in Education International Progress. New York: Pergamon Press, 1977.
Lua MLA (8ú heag.)Não informado. Evaluation in Education International Progress. Pergamon Press, 1977.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.