2024. The effect of icky shuffle training on 30 meter running speed in intensive development high school futsal players in Surabaya. Jurnal Ilmiah Adiraga : Jurnal Penelitian Olahraga. 10, 2 (Nov. 2024), 20–31. DOI:https://doi.org/10.36456/adiraga.v10i2.9800.