AGUSTINA, Y.; SAXENA, R. Teacher Professionalism and Principal Supervision’s Impact on Teacher Performance. PPSDP International Journal of Education, [S. l.], v. 1, n. 1, p. 157–167, 2022. DOI: 10.59175/pijed.v1i1.12. Disponível em: http://ejournal.ppsdp.org/index.php/pijed/article/view/12. Acesso em: 24 jan. 2026.