TANJUNG, G. M.; SIMATUPANG, D. . The Principals’s Program in Increasing the Professional Competence of Teachers in the TK Pelangi Bahayangkara Medan . Asian Journal of Applied Education (AJAE), [S. l.], v. 2, n. 3, p. 393–404, 2023. DOI: 10.55927/ajae.v2i3.5128. Disponível em: https://journal.formosapublisher.org/index.php/ajae/article/view/5128. Acesso em: 12 jun. 2025.