Amelia, D., and S. A. Waluyati. “The Influence of Adolescent Red Cross Extracurriculars on Students’ Discipline Attitudes at SMA Negeri 1 Sekayu”. Edumaspul: Jurnal Pendidikan, Vol. 9, no. 2, Oct. 2025, pp. 1155-64, doi:10.33487/edumaspul.v9i2.9136.