Nasti, Nilawati, Ahmad Husin Lubis, and Abdul Rasyd MS. “Analysis of the Influence of Digital Marketing on Increasing Customer Loyalty in the Industrial Era 4.0”. International Journal of Economics (IJEC) 3, no. 2 (November 1, 2024): 1298–1306. Accessed November 26, 2024. https://ejournal.ipinternasional.com/index.php/ijec/article/view/1049.