Não informado. (1973). Foodborne and Waterborne Disease Outbreaks. Center for Disease Control.
Παραπομπή σε μορφή Chicago (17η εκδ.)Não informado. Foodborne and Waterborne Disease Outbreaks. Atlanta, Ga: Center for Disease Control, 1973.
Παραπομπή σε μορφή MLA (8th εκδ.)Não informado. Foodborne and Waterborne Disease Outbreaks. Center for Disease Control, 1973.
Πρόσοχή: Οι παραπομπές μπορεί να μην είναι 100% ακριβείς.