van der Watt, MJ, AA Aboo, and RN Scott Millar. “A Prospective Study of Electrical Cardioversion for Sustained Tachycardias by Emergency Unit Personnel”. South African Medical Journal 85, no. 6 (May 15, 2017). Accessed September 30, 2026. https://www.ajol.info/index.php/samj/article/view/156040.