Wihasto, Hanan, and Novi Widiastuti. “DETERMINAN NILAI PELANGGAN & IMPLIKASINYA TERHADAP LOYALITAS KONSUMEN DI BANK SYARIAH WILAYAH DKI JAKARTA”. Journal Competency of Business, vol. 3, no. 2, Dec. 2019, pp. 144-65, doi:10.47200/jcob.v3i2.675.