Não informado. (1969). Library & Information Science Abstracts. Library Association Publishing.
Lua i Stíl Chicago (17ú heag.)Não informado. Library & Information Science Abstracts. London: Library Association Publishing, 1969.
Lua MLA (8ú heag.)Não informado. Library & Information Science Abstracts. Library Association Publishing, 1969.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.