M. Ulfah, “Sistem Operasional Dalam PT. BPRS Jabal Tsur Pandaan Kabupaten Pasuruan: Operational System in PT. BPRS Jabal Tsur Pandaan, Pasuruan Regency”, FN, vol. 16, no. 1, pp. 101–116, Jan. 2017, doi: 10.35719/fenomena.v16i1.664.