Aulia, Raihanati, and Mustapa Khamal Rokan. “Penerapan Dan Tantangan Produk Tabungan Haji IB Makbul Pada Masa Pandemi Covid-19 Di PT. Bank Sumut Unit Usaha Syariah”. Acman: Accounting and Management Journal 2, no. 2 (November 30, 2022): 114–120. Accessed December 20, 2024. https://journal.lemlit.org/ojs/index.php/aj/article/view/35.