Mainggal, R. ., & 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), 16–19. https://doi.org/10.56072/jip.v8i2.319