Leuffen, D., Rittberger, B., & Schimmelfennig, F. (2022). Integration and Differentiation in the European Union: Theory and Policies (1st ed. 2022.). Springer International Publishing : Imprint: Palgrave Macmillan. https://doi.org/10.1007/978-3-030-76677-1
芝加哥风格引文Leuffen, Dirk, Berthold Rittberger, 与 Frank Schimmelfennig. Integration and Differentiation in the European Union: Theory and Policies. 1st ed. 2022. Cham: Springer International Publishing : Imprint: Palgrave Macmillan, 2022. https://doi.org/10.1007/978-3-030-76677-1.
MLA引文Leuffen, Dirk, et al. Integration and Differentiation in the European Union: Theory and Policies. 1st ed. 2022. Springer International Publishing : Imprint: Palgrave Macmillan, 2022. https://doi.org/10.1007/978-3-030-76677-1.