SANSAK, K., TUNGTHONGCHAI, O., & JEARRANAI, J. (2015). A CONSTRUCTION OF TENNIS RATING SCALES FOR MATTHAYOMMSUKSA 5 STUDENTS AT SARAWITTAYA SCHOOL. Journal of Sports Science and Technology, 15(2), 69–79. retrieved from https://he01.tci-thaijo.org/index.php/JSST/article/view/44936