Não informado. (2001). Information Retrieval. Kluwer Academic Publishers.
Lua i Stíl Chicago (17ú heag.)Não informado. Information Retrieval. Boston, Mass: Kluwer Academic Publishers, 2001.
Lua MLA (8ú heag.)Não informado. Information Retrieval. Kluwer Academic Publishers, 2001.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.