YENNI KHAIRANI PANE; NATHANAEL SITANGGANG; JOHARIS LUBIS. Implementation Of Problem-Based Management Model On Improving School Quality Culture At Mts Nurul Iman Tanjung Morawa. International Journal of Educational Research & Social Sciences , [S. l.], v. 2, n. 6, p. 1549–1552, 2021. DOI: 10.51601/ijersc.v2i6.218. Disponível em: https://ijersc.org/index.php/go/article/view/218. Acesso em: 7 nov. 2024.