Siboro R, Azansyah A. Income Inequality Analysis in Sumatra (Case Study of South Sumatera, North Sumatera, West Sumatera Province). FINTECH [Internet]. 2024 Oct. 31 [cited 2026 Jun. 7];2(4):309-28. Available from: https://journal.formosapublisher.org/index.php/fintech/article/view/12046