Não informado. (2015). Annals of the Ditsong National Museum of Natural History. Ditsong National Museum of Natural History.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रNão informado. Annals of the Ditsong National Museum of Natural History. Pretoria, Africa do Sul: Ditsong National Museum of Natural History, 2015.
एमएलए (8वां संस्करण) प्रशस्ति पत्रNão informado. Annals of the Ditsong National Museum of Natural History. Ditsong National Museum of Natural History, 2015.
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