Pribadi, S. P., M. Abidzarrin, and D. R. L. Vahlevi. “STRATEGIES AND INNOVATIONS TO INCREASE FUNDRAISING INCOME AT YATIM MANDIRI FOUNDATION SIDOARJO BRANCH AMID THE COVID-19 PANDEMIC”. ICO EDUSHA, vol. 2, no. 1, Jan. 2022, pp. 670-87, https://prosiding.stainim.ac.id/index.php/prd/article/view/146.