FERIANTO, M.; WIDODO, S.; SIREGAR, N. Optimalising Digital Marketing and Service Quality to Enhance Customer Loyalty in the Digital-Economy Era. International Journal of Economics (IJEC), [S. l.], v. 4, n. 2, p. 942–950, 2025. DOI: 10.55299/ijec.v4i2.1456. Disponível em: https://ejournal.ipinternasional.com/index.php/ijec/article/view/1456. Acesso em: 5 dec. 2025.