FITHRIANI, Merry. Strengthening Consumer Loyalty by Provider Communication Products In Industry 4.0. Eqien - Jurnal Ekonomi dan Bisnis, [S. l.], v. 13, n. 04, p. 580 – 587, 2024. DOI: 10.34308/eqien.v13i04.1853. Disponível em: http://stiemuttaqien.ac.id/ojs/index.php/OJS/article/view/1853. Acesso em: 26 jul. 2025.