Lesmana, K. Y. P., I. N. Kanca, W. Wahjoedi, and I. K. I. Swadesi. “Gyaku-Tsuki Punch Technique Training Model to Improve Physical Readiness and Character of Karate Athletes”. International Journal of Health Sciences, vol. 6, no. 3, Sept. 2022, pp. 1335-47, doi:10.53730/ijhs.v6n3.12340.