Haryanto, J., C. Drenowatz, J. M. Picabea, J. Ndayisenga, Padli, F. Zarya, E. Edmizal, Y. Ockta, and V. A. Geantă. “Self-Confidence and Cognitive Speed: Key Predictors of Topspin Accuracy in Competitive Table Tennis”. Physical Education Theory and Methodology, vol. 24, no. 6, Dec. 2024, pp. 912-9, doi:10.17309/tmfv.2024.6.08.