“Pengaruh Biaya Operasional Dan Pendapatan Operasional (BOPO) Dan Non Performing Financing (NPF) Terhadap Return On Asset (ROA) Di Bank Umum Syariah Indonesia Tahun 2015 - 2019”. 2021. JYRS: Journal of Youth Research and Studies 2 (1): 21-41. https://rumahjurnal.iainsasbabel.ac.id/JS/article/view/2037.