Belan, Longginus Laga, and M.D Niron. “Academic Supervision of School Principals, Principal Transformational Leadership, and School Climate on Senior High School Teachers’ Competence”. AL-ISHLAH: Jurnal Pendidikan, vol. 13, no. 3, Dec. 2021, pp. 2132-45, doi:10.35445/alishlah.v13i3.825.