“The Effectiveness of the Goalkeeper in Initiating Attacks for Persik Kediri Football Team”. NUSANTARA SPORTA: Jurnal Pendidikan Dan Ilmu Keolahragaan, vol. 2, no. 02, May 2024, pp. 155-66, https://doi.org/10.2024/ns.v3i04.2025_P559-568.