Nia, Thesya Alda, Ali Munir, and Bernadeta Suhartini. “Modification of Wooden Ball Bullets to Improve the Skillful Motion of Bullet Repellent Games Against Elementary School Students”. Edumaspul: Jurnal Pendidikan 6, no. 2 (October 1, 2022): 2203-2209. Accessed November 21, 2024. https://ummaspul.e-journal.id/maspuljr/article/view/4556.