Hariyanto, H., Wijaya, C., Y Yahfizham, Y., & Zaini, M. F. (2021). Principal Interpersonal Communication in Decision Making And Policy Quality Improvement of MTs Ummi Lubuk Pakam . International Journal of Educational Research &Amp; Social Sciences, 2(1), 77–85. https://doi.org/10.51601/ijersc.v2i1.10