Michael, Patrick S. “Phytoremediation of Heavy Metals by Water Hyacinth in Sewage Wastewater Stabilization Ponds Under Humid Lowland Tropical Climatic Conditions”. International Journal of Environment 8, no. 1 (March 11, 2019): 30–42. Accessed November 21, 2024. https://nepjol.info/index.php/IJE/article/view/23091.