ERLINDA; ZULHER; KASMAWATI. The Influence of Teacher Competency and Principal Leadership on Teacher Performance in State Junior High Schools in Bangkinang District Kampar Regency. Al-Kharaj: Journal of Islamic Economic and Business, [S. l.], v. 8, n. 3, 2026. DOI: 10.24256/kharaj.v8i3.12386. Disponível em: https://ejournal.iainpalopo.ac.id/index.php/alkharaj/article/view/12386. Acesso em: 16 sep. 2026.