Não informado. (1969). Educational Philosophy and Theory. New South Wales University Press.
Lua i Stíl Chicago (17ú heag.)Não informado. Educational Philosophy and Theory. Randwick, Australia: New South Wales University Press, 1969.
Lua MLA (8ú heag.)Não informado. Educational Philosophy and Theory. New South Wales University Press, 1969.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.