Wijayanto, A., T. Soentoyo, and S. Sumartiningsih. “A The Effectiveness of Engklek and Zig-Zag Game Exercises on the Static and Dynamic Balance of Intellectually Impaired Children”. Journal of Physical Education and Sports, Vol. 12, no. 1, Mar. 2023, pp. 30-34, doi:10.15294/jpes.v12i1.75127.