Thongsap , Suwichaya, and Jirawat Kajornsilp. 2020. “THE EFFECTS OF CRAWL STROKE SKILLS TRAINED BY EXPLICIT TEACHING FOR 1ST GRADE NON – SWIMMERS AT PIBOONBUMPEN DEMONSTRATION SCHOOL, BURAPHA UNIVERSITY”. Academic Journal of Thailand National Sports University 12 (1). Chonburi, Thailand:188-95. https://he02.tci-thaijo.org/index.php/TNSUJournal/article/view/244320.