APA (7th ed.) Citation

Leuffen, D., Rittberger, B., & Schimmelfennig, F. (2011). Differentiated integration: Explaining variation in the Europena Union (1st published.). Palgrave Macmillan.

Chicago Style (17th ed.) Citation

Leuffen, Dirk, Berthold Rittberger, and Frank Schimmelfennig. Differentiated Integration: Explaining Variation in the Europena Union. 1st published. Basingstoke: Palgrave Macmillan, 2011.

MLA (9th ed.) Citation

Leuffen, Dirk, et al. Differentiated Integration: Explaining Variation in the Europena Union. 1st published. Palgrave Macmillan, 2011.