HUTAJULU, L. B. .; ERMAWATI , W. J. .; SLAMET, A. S. . Factors and Strategies Affecting and Improving Financial Performance of Old Age Protection. International Journal of Social Science and Business, [S. l.], v. 7, n. 1, p. 105–114, 2022. DOI: 10.23887/ijssb.v7i1.52570. Disponível em: https://ejournal.undiksha.ac.id/index.php/IJSSB/article/view/52570. Acesso em: 4 mar. 2025.