Qurtubi, A., A. Munir, and C. N. Wali. “Efforts to Improve Learning Outcomes of Bullet Repellent Skills in Elementary School Students With Tail Ball Action Modifications”. Edumaspul: Jurnal Pendidikan, Vol. 6, no. 2, Oct. 2022, pp. 2000-5, doi:10.33487/edumaspul.v6i2.3529.