K. Asmer, Mohammed. “The Effect of Using Learning Program According to the Changing of Scheduling Practice (massed-Distributed) in Learning Front Hand Spring Skill on Vault Apparatus in Gymnastic”. Al-Rafidain Journal For Sport Sciences 19, no. 61 (June 1, 2013): 101–123. Accessed October 2, 2025. https://rsprs.uomosul.edu.iq/index.php/rsprs/article/view/50889.