1. Umlindi. Issue 2020-03, Institute for Soil, Climate and Water;Agriculture Research Center (Arc),2020
2. Standard Guidelines for Artificial Recharge of Ground Water;American Society of Civil Engineers,2001
3. Impact of Climate change on Groundwater recharge estimation;Cave,2003
4. Climate change vulnerability index for South African aquifers;Dennis;WaterSA,2012
5. Potential climate change impacts on Karoo aquifers;Dennis;Water Res Commission Report No. KV 308/12,2013