Não informado. (1933). Onderstepoort Journal of Veterinary Science and Animal Industry. Department of Agriculture.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रNão informado. Onderstepoort Journal of Veterinary Science and Animal Industry. Pretoria, Africa do Sul: Department of Agriculture, 1933.
एमएलए (8वां संस्करण) प्रशस्ति पत्रNão informado. Onderstepoort Journal of Veterinary Science and Animal Industry. Department of Agriculture, 1933.
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