Simatupang, Apriani, AND Franzlay, Denis. " Capital Adequacy Ratio(CAR), Non Performing Financing (NPF), Efisiensi Operasional (BOPO) dan Financing to Deposit Ratio (FDR) Terhadap Profitabilitas Bank Umum Syariah di Indonesia" JURNAL ADMINISTRASI KANTOR [Online], Volume 4 Number 2 (1 December 2016)