Não informado. (1973). Foodborne and Waterborne Disease Outbreaks. Center for Disease Control.
Chicago-referens (17:e uppl.)Não informado. Foodborne and Waterborne Disease Outbreaks. Atlanta, Ga: Center for Disease Control, 1973.
MLA-referens (8:e uppl.)Não informado. Foodborne and Waterborne Disease Outbreaks. Center for Disease Control, 1973.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.