Ridwan, Mochamad. “Economic Contraction and Inequality of Two Provinces With Coastal Characteristics in Sumatra: What Are the Causes?”. AMCA Journal of Community Development 3, no. 1 (January 27, 2023): 1–7. Accessed July 4, 2024. http://journal.amca2012.org/index.php/ajcd/article/view/231.