Mahmood Mohammed, Amanj, امانج, Fedaa Al-Khayat, and فداء. “The Effect of Using Learning Centers Strategy on Learning Some of Soccer Basic Skills”. Al-Rafidain Journal For Sport Sciences (RJSS) 24, no. 75: 79–97. Accessed September 17, 2025. https://ojs.uomosul.edu.iq/index.php/rjss/article/view/35606.