Chetty, Shaeen, Letitia Pillay, and Marc S. Humphries. “Gold mining’s Toxic Legacy: Pollutant Transport and Accumulation in the Klip River Catchment, Johannesburg”. South African Journal of Science 117, no. 7-8 (January 5, 2022). Accessed August 8, 2026. https://www.ajol.info/index.php/sajsci/article/view/219729.