Iqbal, Ichsan. “Political, Economic, Social, Technological, Environmental, and Legal Analysis on Dompet Ummat Pontianak Indonesia”. Journal of Research in Business, Economics and Management 14, no. 2 (February 19, 2020): 2638-2644. Accessed May 2, 2024. http://scitecresearch.com/journals/index.php/jrbem/article/view/1830.