Não informado. (1979). Euro reports and studies. World Health Organization.
Lua i Stíl Chicago (17ú heag.)Não informado. Euro Reports and Studies. Copenhagen: World Health Organization, 1979.
Lua MLA (8ú heag.)Não informado. Euro Reports and Studies. World Health Organization, 1979.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.