Não informado. (2004). Epidemiological Bulletin. Pan American Health Organization.
Chicago (17e ed.) BronvermeldingNão informado. Epidemiological Bulletin. Washington: Pan American Health Organization, 2004.
MLA (8e ed.) BronvermeldingNão informado. Epidemiological Bulletin. Pan American Health Organization, 2004.
Let op: Deze citaties zijn niet altijd 100% accuraat.