Chimmi Dorji, and Pema Chophel. “Determination of Water Quality Indices and Assessment of Heavy Metal Pollution of Drinking Water Sources in Thimphu”. Bhutan Health Journal 9, no. 2 (November 29, 2023): 16–21. Accessed May 16, 2024. https://bhj.com.bt/index.php/bhj/article/view/361.