Kurnia, Rian Dwi, et al. “The Relationship Between the Flexibility of the Torso With the Ability to Long Jump Hanging Style in Male Students of Class XI IPS SMA Negeri 4 Palembang”. Journal of Social Work and Science Education, vol. 4, no. 3, June 2023, pp. 924-31, doi:10.52690/jswse.v4i3.637.