BLONSKA, K. The impact of physical activity on students’ happiness in the context of positive and negative motivation. Physical Education of Students, [S. l.], v. 26, n. 2, p. 89–97, 2022. DOI: 10.15561/20755279.2022.0205. Disponível em: https://sportedu.org.ua/index.php/PES/article/view/1625. Acesso em: 5 jul. 2026.