Não informado. (1951). ETS Developments. Educational Testing Service.
Lua i Stíl Chicago (17ú heag.)Não informado. ETS Developments. Princeton, NJ: Educational Testing Service, 1951.
Lua MLA (8ú heag.)Não informado. ETS Developments. Educational Testing Service, 1951.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.