Purwanti, N.A. et al. 2023. IMPLEMENTASI RELATIONSHIP MARKETING TERHADAP CUSTOMER LOYALITY PADA PT. BANK SUMUT KCP SYARIAH SIMPANG KAYU BESAR MELALUI CUSTOMER SATISFACTION. JURNAL ILMIAH EDUNOMIKA. 7, 2 (May 2023). DOI:https://doi.org/10.29040/jie.v7i2.9091.