PURWANTO, PURWANTO. NON PERFORMING FINANCING AND EFFICIENCY OF ISLAMIC BANKS IN INDONESIA. Journal of Business Studies and Management Review, [S. l.], v. 4, n. 2, p. 159–168, 2021. DOI: 10.22437/jbsmr.v4i2.13289. Disponível em: https://www.online-journal.unja.ac.id/jbsmr/article/view/13289. Acesso em: 22 apr. 2026.