F. . Hotdiana H., Z. F. Napitupulu, and M. L. I. . Nasution, “Wadiah Savings Product Marketing Strategy to Increase Customers at Bank Syariah Indonesia KCP Batang Toru”, j.ekonomi, j.manajemen, j.bisnis, j.akuntansi, vol. 2, no. 1, pp. 43–48, Apr. 2022.