Smith, Andrew 1834. [Exhibition of four South African birds and a Saurian reptile]. In: [Proceedings of the] South African Institution (Jan. 8, 1834). South African Quarterly Journal Second Series, No.2 (part 2, January-March 1834): 143-144.
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Kenya Wildlife Service 2025. Kenya rhino range expansion as catalysts of a wildlife economy. KWS Wild Magazine no. 4: 1-4.
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Kenya Wildlife Service 2025. National Wildlife census 2025 technical report (abridged version) (. Naivasha, Wildlife Research and Training Institute. pp. 1-163.