GUIA, M. J. The Stratification of Citizenship in Europe: Citizenship Versus Irregularity. Debater a Europa, [S. l.], n. 15, p. 115-132, 2016. DOI: 10.14195/1647-6336_15_6. Disponível em: https://impactum-journals.uc.pt/debatereuropa/article/view/_15_6. Acesso em: 4 jun. 2025.