Alan Khourshid Rafeeq, Vian Abdul-kareem Saeed. Influence of the self and group competition curriculum on learning freestyle swimming, under the age of 12. ms [Internet]. 2020 Mar. 30 [cited 2024 Apr. 28];19(1):0007-16. Available from: https://jcopew.uobaghdad.edu.iq/index.php/sport/article/view/517