Nikmir Rohmiati; Arlina Nurbaity Lubis; Beby Karina Fawzeea Sembiring. THE INFLUENCE OF SERVICE QUALITY AND PRODUCT QUALITY BSI GRIYA ON CUSTOMER LOYALTY THROUGH CUSTOMER SATISFACTION OF BANK SYARIAH INDONESIA CAPEM ISKANDAR MUDA IN MEDAN CITY . IJSET 2024, 3, 515-521.