PASARIBU, Ayu Angelina; BUTAR BUTAR, Riyani. Optimizing Micro, Small, and Medium Business Ecosystem Elements to Improve the Economic Competitiveness of North Sumatra. Journal of Sustainable Economics, [S. l.], v. 3, n. (2), p. 81–89, 2025. DOI: 10.32734/jse.v3i(2).23390. Disponível em: https://talenta.usu.ac.id/jse/article/view/23390. Acesso em: 7 dec. 2025.