APA (7th ed.) Citation

Lenaerts, K., Bray, R., & Nuffel, P. V. (1999). Constitutional law of the European Union. Sweet & Maxwell.

Chicago Style (17th ed.) Citation

Lenaerts, Koenraad, Robert Bray, and Piet Van Nuffel. Constitutional Law of the European Union. London: Sweet & Maxwell, 1999.

MLA (9th ed.) Citation

Lenaerts, Koenraad, et al. Constitutional Law of the European Union. Sweet & Maxwell, 1999.