SULASTRI, S. Principal’s Leadership Improving Discipline of School’s Citizens. PPSDP International Journal of Education, [S. l.], v. 2, n. 2, p. 269–275, 2023. DOI: 10.59175/pijed.v2i2.93. Disponível em: https://ejournal.ppsdp.org/index.php/pijed/article/view/93. Acesso em: 10 jul. 2026.