Não informado. (1969). Social sciences citation index. Institute for Scientific Information.
Lua i Stíl Chicago (17ú heag.)Não informado. Social Sciences Citation Index. Philadelphia, Pa: Institute for Scientific Information, 1969.
Lua MLA (8ú heag.)Não informado. Social Sciences Citation Index. Institute for Scientific Information, 1969.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.