Look-in, C., Pinthong, M., Chaijenkij, K., Pagaduan, J., & Limroongreungrat, W. (2018). THE VALIDITY OF CHRONOJUMP SYSTEM ® TO MEASURE VERTICAL JUMP. Journal of Sports Science and Technology, 18(1), 8–15. retrieved from https://he01.tci-thaijo.org/index.php/JSST/article/view/114078