Leuffen, D., Rittberger, B., & Schimmelfennig, F. (2011). Differentiated integration: Explaining variation in the Europena Union (1st published.). Palgrave Macmillan.
Chicago Style (17th ed.) CitationLeuffen, Dirk, Berthold Rittberger, and Frank Schimmelfennig. Differentiated Integration: Explaining Variation in the Europena Union. 1st published. Basingstoke: Palgrave Macmillan, 2011.
MLA (9th ed.) CitationLeuffen, Dirk, et al. Differentiated Integration: Explaining Variation in the Europena Union. 1st published. Palgrave Macmillan, 2011.
Warning: These citations may not always be 100% accurate.