Não informado. (1953). Palaeontologia Africana. University of the Witwatersrand, Bernard Price Institute for Palaeontological Research.
Παραπομπή σε μορφή Chicago (17η εκδ.)Não informado. Palaeontologia Africana. Johannesburg, Africa do Sul: University of the Witwatersrand, Bernard Price Institute for Palaeontological Research, 1953.
Παραπομπή σε μορφή MLA (8th εκδ.)Não informado. Palaeontologia Africana. University of the Witwatersrand, Bernard Price Institute for Palaeontological Research, 1953.
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