APA način citiranja (7. izdanje)
Barnard, C. (2016). The substantive law of the EU: The four freedoms (5th ed.). Oxford University Press.
Čikaški stil citiranja (17. izdanje)
Barnard, Catherine. The Substantive Law of the EU: The Four Freedoms. 5th ed. Oxford, United Kingdom: Oxford University Press, 2016.
MLA način citiranja (9. izdanje)
Barnard, Catherine. The Substantive Law of the EU: The Four Freedoms. 5th ed. Oxford University Press, 2016.
Upozorenje: Ovi citati možda nisu uvijek 100% točni.