Vasileva, K., & Sartori, F. (2008). Acquisition of citizenship in European Union. Statistics in focus: Population and social conditions.
Lua i Stíl Chicago (17ú heag.)Vasileva, Katya, agus Fabio Sartori. "Acquisition of Citizenship in European Union." Statistics in Focus: Population and Social Conditions 2008.
Lua MLA (8ú heag.)Vasileva, Katya, agus Fabio Sartori. "Acquisition of Citizenship in European Union." Statistics in Focus: Population and Social Conditions, 2008.
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