Afja, O. D., M. Arif, H. . Syam, Z. Sesmiarni, and S. Syamsurizal. “The Effect of Supervision on Improving Teacher Professional Competence at SMAN 3 Bukittinggi”. GIC Proceeding, vol. 1, no. 1, July 2023, pp. 155-62, doi:10.30983/gic.v1i1.109.