Não informado. (1937). Harvard Educational Review. Harvard University, Graduate School of Education.
Lua i Stíl Chicago (17ú heag.)Não informado. Harvard Educational Review. Cambridge, Mass: Harvard University, Graduate School of Education, 1937.
Lua MLA (8ú heag.)Não informado. Harvard Educational Review. Harvard University, Graduate School of Education, 1937.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.