Perspectives in Education | University of the Free State. Cambridge University Press.
Lua i Stíl Chicago (17ú heag.)Perspectives in Education | University of the Free State. Cambridge University Press.
Lua MLA (9ú heag.)Perspectives in Education | University of the Free State. Cambridge University Press.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.