Não informado. South African cancer bulletin. National Cancer Association of South Africa.
Style de citation Chicago (17e éd.)Não informado. South African Cancer Bulletin. Johannesburg, Africa do Sul: National Cancer Association of South Africa.
Style de citation MLA (8e éd.)Não informado. South African Cancer Bulletin. National Cancer Association of South Africa.
Attention : ces citations peuvent ne pas être correctes à 100%.