Alonso de León, S. (2017). Composite administrative procedures in the European Union. Centro de Estudios Europeos Luis Ortega Alvarez.
Chicago Style (17. basım) AtıfAlonso de León, Sergio. Composite Administrative Procedures in the European Union. Madrid: Centro de Estudios Europeos Luis Ortega Alvarez, 2017.
MLA (9th ed.) AtıfAlonso de León, Sergio. Composite Administrative Procedures in the European Union. Centro de Estudios Europeos Luis Ortega Alvarez, 2017.
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