“The Effect of Physical Education Lessons on Reducing Learning Stress Levels in Class VIII Students of SMP Negeri 4 Kunto Darussalam”, Compet. J. Pendidik. Kepelatihan Olahraga, vol. 17, no. 3, pp. 2267–2274, Oct. 2025, doi: 10.26858/cjpko.v17i3.423.