APA (7e ed.) Bronvermelding

Barnard, C. (2016). The substantive law of the EU: The four freedoms (5th ed.). Oxford University Press.

Chicago (17e ed.) Bronvermelding

Barnard, Catherine. The Substantive Law of the EU: The Four Freedoms. 5th ed. Oxford, United Kingdom: Oxford University Press, 2016.

MLA (9e ed.) Bronvermelding

Barnard, Catherine. The Substantive Law of the EU: The Four Freedoms. 5th ed. Oxford University Press, 2016.