Milanie, Feby, Sumono ., and Rujiman . “Analysis of Regional Development and The Needs of Clean Water Services in Medan City”. Journal of Economics and Behavioral Studies 6, no. 8 (August 30, 2014): pp. 670-681. Accessed October 17, 2026. https://ojs.amhinternational.com/index.php/jebs/article/view/527.