UKIP’s Use of Valence Issues to Impact Attitudes Towards EU Membership: How Economic Perceptions Impacted the Brexit Vote . University of Denver Undergraduate Research Journal, [S. l.], v. 2, n. 1, 2021. Disponível em: https://www.duurjportal.com/index.php/duurj/article/view/92. Acesso em: 18 may. 2026.