Firdaus, Muhammad, and Muhamad Hosen. “Efficiency of Islamic Banks Using Two Stage Approach of Data Envelopment Analysis”. Buletin Ekonomi Moneter dan Perbankan 16, no. 2 (April 4, 2014): 155-176. Accessed July 17, 2024. https://bmeb-bi.org/index.php/BEMP/article/view/442.