Hutajulu, Lumban Benget, Wita Juwita Ermawati, and Alim Setiawan Slamet. 2022. “Factors and Strategies Affecting and Improving Financial Performance of Old Age Protection”. International Journal of Social Science and Business 7 (1):105-14. https://doi.org/10.23887/ijssb.v7i1.52570.