Tarus, S. J., J. L. Kituyi, and F. K. Segor. “Spatial and Temporal Variability of Phosphates, Nitrates and Selected Physico-Chemical Parameters of River Nzoia”. Africa Environmental Review Journal 5, no. 2 (November 19, 2022): Pg 29–41. Accessed January 15, 2025. http://41.89.164.28/index.php/aerj/article/view/249.