Oers, R. v. (2014). Deserving citizenship: Citizenship tests in Germany, the Netherlands and the United Kingdom. Martinus Nijhoff Publishers.
Tohutoru Kātū Chicago (17th ed.)Oers, Ricky van. Deserving Citizenship: Citizenship Tests in Germany, the Netherlands and the United Kingdom. Leiden, Netherlands: Martinus Nijhoff Publishers, 2014.
Tohutoro MLA (9th ed.)Oers, Ricky van. Deserving Citizenship: Citizenship Tests in Germany, the Netherlands and the United Kingdom. Martinus Nijhoff Publishers, 2014.
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