OFRITA, Leni; KARTIKOWATI, Sri; SUMARNO, Sumarno. The Effect of Principal Leadership and Teacher Work Spirit on Teacher Discipline in Elementary Schools in Cluster XII, Dumai Timur District. Journal of Educational Sciences, [S. l.], v. 6, n. 1, p. 116–129, 2026. DOI: 10.31258/jes.6.1.p.116-129. Disponível em: https://jes.ejournal.unri.ac.id/index.php/JES/article/view/1883. Acesso em: 20 may. 2026.