SUKMONO, M.; YASIK, Y. L.; WAHYUDIANTY, M. U.; INDRAYANI, R. The Role of Internal Marketing Strategy on the Quality of Frontline Employee Services in Private Higher Education. ProBisnis : Jurnal Manajemen, [S. l.], v. 16, n. 4, p. 653–657, 2025. Disponível em: https://ejournal.joninstitute.org/index.php/ProBisnis/article/view/1074. Acesso em: 18 apr. 2026.