Ayog, Janice Lynn, et al. “Turbidity Trends in 20 Water Treatment Plants Across Sabah, Malaysia: Implications for Sustainable Water Resource Management”. International Journal of Integrated Engineering, vol. 17, no. 9, Dec. 2025, pp. 366-81, https://publisher.uthm.edu.my/ojs/index.php/ijie/article/view/19803.