Mainggal, Rifaldi, and Yofandi Djibran Himran. “Analisis Tingkat Ketimpangan Ekonomi Kabupaten Banggai Kepulauan Menurut Willamson Index: Analysis of the Level of Economic Inequality in Banggai Islands Regency According to the Willamson Index”. Jurnal Ilmiah Produktif 8, no. 2 (November 30, 2020): 16–19. Accessed November 22, 2024. https://ojs.untika.ac.id/index.php/jip/article/view/319.