PURWANTO, PURWANTO, and SOPHIA DWI RATNA. “ANALYSIS OF DETERMINANT FACTORS TOWARD MARGIN MURABAHAH OF INDONESIA ISLAMIC BANKS”. JOURNAL OF BUSINESS STUDIES AND MANAGEMENT REVIEW, vol. 1, no. 2, June 2018, pp. 45-51, doi:10.22437/jbsmr.v1i2.5349.