APA-viite (7. p.)
Maas, W. (2013). Democratic citizenship and the free movement of people. Martinus Nijhoff Publishers.
Chicago-viite (17. p.)
Maas, Willem. Democratic Citizenship and the Free Movement of People. Leiden [Netherlands]: Martinus Nijhoff Publishers, 2013.
MLA-viite (9. p.)
Maas, Willem. Democratic Citizenship and the Free Movement of People. Martinus Nijhoff Publishers, 2013.
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