Não informado. (1959). Race. Institute of Race Relations.
Lua i Stíl Chicago (17ú heag.)Não informado. Race. London: Institute of Race Relations, 1959.
Lua MLA (8ú heag.)Não informado. Race. Institute of Race Relations, 1959.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.