Não informado. (1951). Onderstepoort Journal of Veterinary Research. Director Division of Agriculture Information.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रNão informado. Onderstepoort Journal of Veterinary Research. Pretoria, Africa do Sul: Director Division of Agriculture Information, 1951.
एमएलए (8वां संस्करण) प्रशस्ति पत्रNão informado. Onderstepoort Journal of Veterinary Research. Director Division of Agriculture Information, 1951.
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