SIMAMORA, S. A.; HOTLIN SIREGAR. The Influence of the Leadership of the Head of UPTD Pendidikan on the Performance of the Principals of Public Elementary Schools in Pakkat District, Humbang Hasundutan Regency. Jurnal Mantik, [S. l.], v. 4, n. 4, p. 2517-2521, 2021. DOI: 10.35335/mantik.Vol4.2021.1202.pp2517-2521. Disponível em: http://www.ejournal.iocscience.org/index.php/mantik/article/view/1202. Acesso em: 20 apr. 2026.