Kasanah, R., A. F. . Abidillah, and S. Rusgianto. “Assessing the Internal Factor Affecting the Bank Profitability in Indonesia: Case of Dual Banking System”. Jurnal Ekonomi & Keuangan Islam, vol. 8, no. 2, July 2022, pp. 167-81, doi:10.20885/JEKI.vol8.iss2.art2.