SIRAIT, J. The Commitment of a Headmaster Leadership of Learning to Improve the Quality of Education: The Commitment of a Headmaster Leadership of Learning to Improve the Quality of Education. Jurnal Mantik, [S. l.], v. 4, n. 2, p. 1070-1075, 2020. DOI: 10.35335/mantik.Vol4.2020.874.pp1070-1075. Disponível em: https://iocscience.org/ejournal/index.php/mantik/article/view/874. Acesso em: 23 sep. 2026.