Rahayu, D. ., M. A. Adriansyah, D. D. N. . Rahmah, P. Y. T. . Sanhadi, M. Q. Hasan, dan M. N. . Kalbu. “Brain Gym Therapy: Focus Attention As an Effort to Improve Student Learning Concentration”. International Journal of Social Science and Business, vol. 6, no. 3, Juli 2022, hlm. 404-9, doi:10.23887/ijssb.v6i3.47644.