Akib, B., M. T. G. A. B. MYS, and J. Z. Salic. “Investigation of Surplus (Deficit) Underwriting of Tabarru’ Fund on BNI Life Insurance Unit Syariah”. Journal of Management, Economic, and Financial, vol. 2, no. 4, July 2024, pp. 130-9, doi:10.46799/jmef.v2i4.44.