HARIYANTO, Hariyanto; WIJAYA, Candra; Y YAHFIZHAM, Yahfizham; ZAINI, Muhammad Fuad. Principal Interpersonal Communication in Decision Making And Policy Quality Improvement of MTs Ummi Lubuk Pakam . International Journal of Educational Research & Social Sciences , [S. l.], v. 2, n. 1, p. 77–85, 2021. DOI: 10.51601/ijersc.v2i1.10. Disponível em: https://ijersc.org/index.php/go/article/view/10. Acesso em: 15 apr. 2026.