Tasya Gabriella Sianturi, et al. “Professional Competency of English Teachers and PJOK at SMP Cahaya Pengharapan Abadi Medan”. Indonesian Journal of Interdisciplinary Research in Science and Technology, vol. 1, no. 1, Feb. 2023, pp. 17-30, doi:10.55927/marcopolo.v1i1.3614.