Mong’are, Thomas Momanyi, John Justo Ambuchi, Steve Omari Ngodhe, Joash Barack Okeyo-Owour, Daniel Nyamai, Francis Olal Ongachi, and Amos Otieno Wanjara. “Determination of Heavy Metal Levels in Surface Waters and Sediments of River Riana, Kisii County, Kenya”. International Research Journal of Rongo University 1, no. 1 (October 18, 2023): 55–72. Accessed March 14, 2025. http://journals.rongovarsity.ac.ke/index.php/IJORU/article/view/29.