World Health Organization. (1999). Reduction of maternal mortality. World health Organization.
Chicago (17e ed.) BronvermeldingWorld Health Organization. Reduction of Maternal Mortality. Geneva: World health Organization, 1999.
MLA (8e ed.) BronvermeldingWorld Health Organization. Reduction of Maternal Mortality. World health Organization, 1999.
Let op: Deze citaties zijn niet altijd 100% accuraat.