أ.د مواهب حميد الجبوري منــال مـحمـد احــمد. “The Effect of Exercises According to the Differentiated Education Method in Developing Agility and Learning the Collar Skill of Students in Rhythmic Gymnastics”. Modern Sport 19, no. 4 (December 30, 2020): 0096. Accessed April 29, 2024. https://jcopew.uobaghdad.edu.iq/index.php/sport/article/view/645.