HELMI, Jon. THE PRINCIPAL’S LEADERSHIP STYLE IN IMPROVING TEACHER PERFORMANCE. AL-ISHLAH: Jurnal Pendidikan, [S. l.], v. 11, n. 2, p. 170–181, 2020. DOI: 10.35445/alishlah.v11i2.121. Disponível em: https://alishlah.ahfpublishing.id/alishlah/article/view/121. Acesso em: 13 aug. 2026.