THANNOON, afrah; ALEMAM, safa; AHMED, S. The effect of using the round robin in learn the art of performing some volleyball skills and developing the tendency towards physical education for secondary students. Al-Rafidain Journal For Sport Sciences, [S. l.], v. 25, n. 77, p. 1–13, 2022. DOI: 10.33899/rjss.2022.175427. Disponível em: https://rsprs.uomosul.edu.iq/index.php/rsprs/article/view/50763. Acesso em: 2 oct. 2025.