Fatima Naeem Abdullah, and Luma Sameer Hamoudi. “Double Coding and Its Relationship to Learning the Skill of Preparing and Receiving a Serve in Volleyball Among Fifth-Grade Middle School Female Students”. Modern Sport 19, no. 1 (March 30, 2020): 0097–0108. Accessed April 28, 2024. https://jcopew.uobaghdad.edu.iq/index.php/sport/article/view/532.