RANDIKA AJI, D. .; MAIMUNAH, E. .; YULIAWAN, D. .; EMALIA, Z. . Analysis of Economic and Social Demographic Factors That Influence the Dependency Ratio on the Island of Sumatra. International Journal of Economics, Management and Accounting (IJEMA), [S. l.], v. 1, n. 7, p. 525–536, 2023. DOI: 10.47353/ijema.v1i7.83. Disponível em: https://ij.lafadzpublishing.com/index.php/IJEMA/article/view/83. Acesso em: 6 jul. 2024.