Mohammad, Dhurgham, ضرغام, Samer Gorgees, and سمیر. “Rate of Some Functional Variables Contribution to the Performance Level of the Football Referees”. Al-Rafidain Journal For Sport Sciences (RJSS) 20, no. 66 (June 25, 2025): 194–220. Accessed September 6, 2025. https://tanmiyat.uomosul.edu.iq/index.php/rjss/article/view/36088.