Lutfiana, Rosyiqoh, and Agung Yulianto. “DETERMINAN TINGKAT EFISIENSI BANK UMUM SYARIA DI INDONESIA (PENDEKATAN TWO STAGE DEA)”. Accounting Analysis Journal 4, no. 3 (August 1, 2015). Accessed May 24, 2024. https://journal.unnes.ac.id/sju/aaj/article/view/8313.