Não informado. South African journal of medical sciences. University of the Witwatersrand, Medical Graduate Association.
Chicago-Zitierstil (17. Ausg.)Não informado. South African Journal of Medical Sciences. Johannesburg, Africa do Sul: University of the Witwatersrand, Medical Graduate Association.
MLA-Zitierstil (8. Ausg.)Não informado. South African Journal of Medical Sciences. University of the Witwatersrand, Medical Graduate Association.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.