de Villiers, Gawie, Giel Viljoen, and Herman Booysen. “Global Warming and Climate Change With Reference to South Africa. Some Perspectives”. Suid-Afrikaans Tydskrif vir Natuurwetenskap en Tegnologie / <i>South African Journal of Science and Technology</i&gt; 27, no. 4 (September 20, 2008): 294-306. Accessed April 27, 2024. http://www.satnt.ac.za/index.php/satnt/article/view/201.