FIRMANSYAH, E.; SIREGAR, I. . Analysis to effectiveness e-wom at Madrasah Tsanawiyah Azzidin Medan Denai. Journal of Management Science (JMAS), [S. l.], v. 8, n. 1, p. 29–38, 2024. Disponível em: https://www.exsys.iocspublisher.org/index.php/JMAS/article/view/612. Acesso em: 6 jul. 2026.