1. United Nations. Department of Economics and Social Affairs, Population Division. World Population Prospects: The 2008 Revision. New York: United Nations Publications; 2009
2. Department of Water Affairs and Forestry (DWAF). National Water Resource Strategy: Report. 1st ed. Pretoria, South Africa: Department of Water Affairs and Forestry (DWAF); 2002
3. Hassan R. Climate change and African agriculture. Policy No. 28. Based on Durand (2006), “assessing the impact of climate change on crop water use in South Africa”. In: CEEPA Discussion Paper No. 28, CEEPA. South Africa: University of Pretoria; 2006
4. Sisulu S, Scaramella C. Food for Thought: A Climate for Ending Hunger. Skyways, February 2012. Kyalami, South Africa: Panorama publications; 2012. pp. 31-33
5. Mabhaudhi T. Drought Tolerance and Water-Use of Selected South African Landraces of Taro (Colocasia esculenta L. Schott) and Bambara Groundnut (Vigna subterranea L. Verdc). PhD thesis. Pietermaritzburg, South Africa: Crop Science, University of KwaZulu-Natal; 2012