Não informado. (1962). Cancer News. National Cancer Association of South Africa.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रNão informado. Cancer News. Johannesburg, Africa do Sul: National Cancer Association of South Africa, 1962.
एमएलए (8वां संस्करण) प्रशस्ति पत्रNão informado. Cancer News. National Cancer Association of South Africa, 1962.
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