Não informado. (1959). WHO chronicle. World Health Organization.
Lua i Stíl Chicago (17ú heag.)Não informado. WHO Chronicle. Geneve, Suíça: World Health Organization, 1959.
Lua MLA (8ú heag.)Não informado. WHO Chronicle. World Health Organization, 1959.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.