Não informado. (2017). Environmental Health Criteria. World Meath Organization.
Lua i Stíl Chicago (17ú heag.)Não informado. Environmental Health Criteria. Geneve, Suíça: World Meath Organization, 2017.
Lua MLA (8ú heag.)Não informado. Environmental Health Criteria. World Meath Organization, 2017.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.