Hutajulu LB, Ermawati WJ, Slamet AS. Factors and Strategies Affecting and Improving Financial Performance of Old Age Protection. IJSSB [Internet]. 13 Desember 2022 [dikutip 17 Juli 2024];7(1):105-14. Tersedia pada: https://ejournal.undiksha.ac.id/index.php/IJSSB/article/view/52570