Samudro, Y. T. J., Wati, I. D. P., Gandasari, M. F., Yosika, G. F., Sastaman B, P., & Sofyan, D. (2023). Running 30 meters for boys and girls in first and second grades of elementary school. JOURNAL RESPECS (Research Physical Education and Sports), 5(1), 165–171. https://doi.org/10.31949/respecs.v5i1.4446