TRIANA, N. Principal Supervision in Improving Teachers’ Professional Competence: A Systematic Review of the Literature. PPSDP International Journal of Education, [S. l.], v. 4, n. 2, p. 692–702, 2025. DOI: 10.59175/pijed.v4i2.566. Disponível em: https://ejournal.ppsdp.org/index.php/pijed/article/view/566. Acesso em: 31 jul. 2026.