Não informado. Polish Scientific Periodicals. Polish Academy of Sciences, Documentation and Scientific Information Centre.
Lua i Stíl Chicago (17ú heag.)Não informado. Polish Scientific Periodicals. Warsaw: Polish Academy of Sciences, Documentation and Scientific Information Centre.
Lua MLA (8ú heag.)Não informado. Polish Scientific Periodicals. Polish Academy of Sciences, Documentation and Scientific Information Centre.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.