Jauwiyah, Y. Arafat, and Y. . Puspita. “The Effectiveness of Principal Supervision and Teacher Professional Competence on Teacher Performance in SMP Kisam Tinggi District, South OKU”. Jurnal Pendidikan Tambusai, vol. 5, no. 3, Aug. 2021, pp. 5570-3, doi:10.31004/jptam.v5i3.1752.