Mainggal, R. . and Himran, Y. D. (2020) “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(2), pp. 16–19. doi: 10.56072/jip.v8i2.319.