Swimmer Penny Heyns of SA sets four world records in just two days in the 100m and 200m breaststroke in South California, USA.

South African History Online. (2012, July 13). Swimmer Penny Heyns of SA sets four world records in just two days in the 100m and 200m breaststroke in South California, USA.. South African History Online. https://sahistory.org.za/ref/E-0088407

South African History Online (2012) 'Swimmer Penny Heyns of SA sets four world records in just two days in the 100m and 200m breaststroke in South California, USA.', South African History Online, 13 July. Available at: https://sahistory.org.za/ref/E-0088407 (Accessed: 9 August 2026).

South African History Online, Swimmer Penny Heyns of SA sets four world records in just two days in the 100m and 200m breaststroke in South California, USA. [website], https://sahistory.org.za/ref/E-0088407, (accessed 9 August 2026).

"Swimmer Penny Heyns of SA sets four world records in just two days in the 100m and 200m breaststroke in South California, USA.." South African History Online, 13 July 2012, https://sahistory.org.za/ref/E-0088407. Accessed 9 Aug. 2026.

South African History Online. "Swimmer Penny Heyns of SA sets four world records in just two days in the 100m and 200m breaststroke in South California, USA.." South African History Online. July 13, 2012. https://sahistory.org.za/ref/E-0088407.