Asim Ameer Fadhil, and Ukla Sulaiman Al-houry. “The Effectiveness of a Psychological-Sports Program to Reduce Aggression, Anger and Stubbornness Among Primary School Students”. Modern Sport 20, no. 1 (March 30, 2021): 0143–0157. Accessed December 20, 2024. https://jcopew.uobaghdad.edu.iq/index.php/sport/article/view/682.