Zapata-Barrero, R. (2009). Citizenship policies in the age of diversity: Europe at the crossroads. CIDOB.
Chicago-viite (17. p.)Zapata-Barrero, Ricard. Citizenship Policies in the Age of Diversity: Europe at the Crossroads. Barcelona: CIDOB, 2009.
MLA-viite (9. p.)Zapata-Barrero, Ricard. Citizenship Policies in the Age of Diversity: Europe at the Crossroads. CIDOB, 2009.
Varoitus: Nämä viitteet eivät aina ole täysin luotettavia.