Susetyo, Didik, Zunaidah Zunaidah, Siti Rohima, Devi Valeriani, and Abdul Bashir. 2018. “Impact of Capital Expenditure and Public Utility Customers to Economic Development of District-City in Sumatra-Indonesia”. International Journal of Economics and Financial Issues 8 (1):126-35. https://econjournals.com/index.php/ijefi/article/view/5768.