Kusumawardani, E. ., S. . Sugito, P. Y. . Fauziah, B. . Pamungkas, and H. . Tanimoto. “Character Formation through Undokai: Exploring the Educational Values of Japanese Practices for Indonesian Students”. International Journal of Learning, Teaching and Educational Research, vol. 24, no. 11, Nov. 2025, pp. 526-39, https://www.ijlter.net/index.php/ijlter/article/view/2596.