Não informado. (2001). National health insurance. Medical Research Committe.
Chicago (17e ed.) BronvermeldingNão informado. National Health Insurance. London: Medical Research Committe, 2001.
MLA (8e ed.) BronvermeldingNão informado. National Health Insurance. Medical Research Committe, 2001.
Let op: Deze citaties zijn niet altijd 100% accuraat.