Não informado. South African journal of medical sciences. University of the Witwatersrand, Medical Graduate Association.
Chicago (17e ed.) BronvermeldingNão informado. South African Journal of Medical Sciences. Johannesburg, Africa do Sul: University of the Witwatersrand, Medical Graduate Association.
MLA (8e ed.) BronvermeldingNão informado. South African Journal of Medical Sciences. University of the Witwatersrand, Medical Graduate Association.
Let op: Deze citaties zijn niet altijd 100% accuraat.