Rujiani, R., S. Sarwi, and A. Rusilowati. “Implementation of School Co-Curricular Activities through the Saturday Program (PROSA)”. Proceedings of International Conference on Science, Education, and Technology, vol. 12, no. 1, Aug. 2026, pp. 45-52, https://proceeding.unnes.ac.id/ISET/article/view/5385.