MUSLIM, M.; MAILIN, M.; RITONGA, H. J. Effectiveness Model of Marketing Communication of Bank Sumut Syariah in Increasing Public Interest in Saving at Bank Sumut Syariah KCP Binjai. Journal of Mathematics Instruction, Social Research and Opinion, Bandung, Indonesia, v. 4, n. 4, p. 1603–1614, 2026. DOI: 10.58421/misro.v4i4.910. Disponível em: https://journal-gehu.com/index.php/misro/article/view/910. Acesso em: 1 jun. 2026.