NASHWAN MAHMOOD AL SAFFAR, D. The Effect of competition style on the collective cognitive domain (Contemplative - impulse) on learning some basic skills of volleyball and their Retenion. College of Basic Education Research Journal, [S. l.], v. 11, n. 1, p. 381–415, 2012. Disponível em: https://jeh.uomosul.edu.iq/index.php/berj/article/view/38286. Acesso em: 27 oct. 2025.