“The Effect Hurdle Drill Training on Leg Muscle Power in the Ollie Technique on Skateboarding Players at Monkasel Skatepark Surabaya”. Jurnal Ilmiah Adiraga : Jurnal Penelitian Olahraga, vol. 10, no. 2, Nov. 2024, pp. 10-19, https://doi.org/10.36456/adiraga.v10i2.9716.