Tria Raharja, A., S. Sulaiman, S. Sumartiningsih, and M. E. Winarno. “Analysis Motion At The Release Stage of The Javelin Using Kinovea Software”. International Conference on Science, Education, and Technology, vol. 8, no. 1, Oct. 2022, pp. 1219-23, https://proceeding.unnes.ac.id/ISET/article/view/1887.