FITRIANINGSIH; CAHYADI, L.; CANDRASA, L. Relational Marketing Management and Influence on Customer Loyalty: Empirical Evidence from Islamic Banks in North Sumatra. Jurnal Ilmiah Manajemen Kesatuan, [S. l.], v. 14, n. 1, p. 855–864, 2026. DOI: 10.37641/jimkes.v14i1.4673. Disponível em: https://jurnal.ibik.ac.id/index.php/jimkes/article/view/4673. Acesso em: 4 jun. 2026.