Nurwidya Astuti, et al. “Effectiveness Cross Selling Marketing to Increase Number Customers Easy Mudharabah Savings Products”. LAA MAISYIR : Jurnal Ekonomi Islam, vol. 12, no. 2, Dec. 2025, pp. 267-93, https://arsip-journal.uin-alauddin.ac.id/index.php/lamaisyir/article/view/58360.