Nurcahyo, Fathan. “MANAGEMENT IDENTIFICATION AND COACHING PATTERN OF ANGKATAN MUDA SEYEGAN (AMS) SOCCER SCHOOL IN FOSTERING AN EARLY AGE PLAYERS (BETWEEN THE AGES OF 10-13 YEARS OLD)”. Jorpres (Jurnal Olahraga Prestasi) 6, no. 1 (August 5, 2016): 23–30. Accessed June 4, 2025. https://journal.uny.ac.id/index.php/jorpres/article/view/10326.