Berliyan, B., Aldy Purnomo, R. ., Cahyono, Y. ., Santoso, S. ., & Abas, S. . (2025). Analysis of Regional and Income Disparities in Nganjuk Regency: A Study Based on the Williamson Index and Gini Index. Eduvest - Journal of Universal Studies, 5(3), 3403–3415. https://doi.org/10.59188/eduvest.v5i3.50901