Não informado. (1965). Foundation of Language. Reidel Publishing.
Lua i Stíl Chicago (17ú heag.)Não informado. Foundation of Language. Dordrecht, Holanda: Reidel Publishing, 1965.
Lua MLA (8ú heag.)Não informado. Foundation of Language. Reidel Publishing, 1965.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.