Não informado. (1973). Foodborne and Waterborne Disease Outbreaks. Center for Disease Control.
Lua i Stíl Chicago (17ú heag.)Não informado. Foodborne and Waterborne Disease Outbreaks. Atlanta, Ga: Center for Disease Control, 1973.
Lua MLA (8ú heag.)Não informado. Foodborne and Waterborne Disease Outbreaks. Center for Disease Control, 1973.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.