Sia, B.C. et al. 2021. A Case Study on Ranhill Water Services and Syarikat Air Negeri Sembilan in Combating the Non-Revenue Water Problem in Johor and Negeri Sembilan. Journal of Governance and Development (JGD). 17, 1 (Jan. 2021), 1–17. DOI:https://doi.org/10.32890/jgd2021.17.1.1.