Yuliada, Yogi, Widiastuti Widiastuti, and Hernawan Hernawan. “THE EFFECTIVENESS OF A BUTTERFLY STYLE SWIMMING SKILL LEARNING MODEL FOR JUNIOR HIGH”. IJER - INDONESIAN JOURNAL OF EDUCATIONAL REVIEW 7, no. 1 (February 2, 2021): 65–77. Accessed November 22, 2024. https://journal.unj.ac.id/unj/index.php/ijer/article/view/19566.