“Development of a Heading Technique Training Model in Futsal Games for PJKR Students of the 2024 Class of Tadulako University, Palu”, Compet. J. Pendidik. Kepelatihan Olahraga, vol. 18, no. 1, pp. 0979–0986, Feb. 2026, Accessed: Feb. 22, 2026. [Online]. Available: https://competitor.idjournal.eu/index.php/competitor/article/view/587