Sobarna, A. ., S. . Hambali, S. T. . Paramitha, M. S. . Shafie, and M. G. . Ramadhan. “The Effect of Training Stride Length and Stride Frequency on Increasing Sprint Speed”. Migration Letters, vol. 20, no. 6, Sept. 2023, pp. 1122-36, doi:10.59670/ml.v20i6.5079.