The Influence of Principal Academic Supervision and Work Motivation on State High School Teacher Performance in Toba Regency. JUPE : Jurnal Pendidikan Mandala, [S. l.], v. 9, n. 2, p. 565–584, 2024. DOI: 10.58258/jupe.v9i2.7101. Disponível em: https://ejournal.mandalanursa.org/index.php/JUPE/article/view/7101. Acesso em: 23 jun. 2026.