AS, F., F. . Fatmariyah, S. Arifin, and M. Syarif. “Implementation of Relationship Marketing Sharia Perspective In Sharia Microfinance Institutions In Madura”. Journal Research of Social Science, Economics, and Management, vol. 2, no. 6, Jan. 2023, pp. 1063 -, doi:10.59141/jrssem.v2i06.268.