References
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- Boshoff AF, Landman M, Kerley GIH. 2016. Filling the gaps on the maps: historical distribution patterns of some larger mammals in part of southern Africa. Transactions of the Royal Society of South Africa 71: 23–87. doi: 10.1080/0035919X.2015.1084066
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- Skead CJ 2007. Historical incidence of the larger land mammals in the broader Eastern Cape (2nd edn). Boshoff AF, Kerley GIH, Lloyd PH (eds). Port Elizabeth: Centre for African Conservation Ecology, Nelson Mandela Metropolitan University.
- Skead CJ 2011. Historical incidence of the larger land mammals in the broader Western and Northern Cape (2nd edn). Boshoff AF, Kerley GIH, Lloyd PH (eds). Port Elizabeth: Centre for African Conservation Ecology, Nelson Mandela Metropolitan University.