AKRAM, B.; SUNEEL , I. . The Relationship between Optimism and Academic Achievement among University Students in Pakistan. Pakistan Journal of Social Sciences, [S. l.], v. 43, n. 2, p. 283-294, 2023. Disponível em: http://pjss.bzu.edu.pk/index.php/pjss/article/view/1173. Acesso em: 20 apr. 2024.