VALENTIM, J. P. Sherif’s theoretical concepts and intergroup relations studies: notes for a positive interdependence. Psychologica, [S. l.], n. 52-II, p. p. 585-598, 2010. DOI: 10.14195/1647-8606_52-2_25. Disponível em: https://impactum-journals.uc.pt/psychologica/article/view/1647-8606_52-2_25. Acesso em: 15 jul. 2025.