Octrina, Fajra, and Hariadi Eka Priatmojo. “Islamic Bank Efficiency: An Efficiency Method With SFA”. Jurnal Perspektif Pembiayaan dan Pembangunan Daerah 10, no. 6 (February 28, 2023): 379 - 394. Accessed July 5, 2024. https://online-journal.unja.ac.id/JES/article/view/18250.