Cita APA (7th ed.)

Fitzmaurice, M., Lefeber, R., & Vierdag, E. (1991). The Changing political structure of Europe: Aspects of international law. Nijhoff.

Cita Chicago (17th ed.)

Fitzmaurice, M., R. Lefeber, i E.W Vierdag. The Changing Political Structure of Europe: Aspects of International Law. Dordrecht, The Netherlands: Nijhoff, 1991.

Cita MLA (9th ed.)

Fitzmaurice, M., et al. The Changing Political Structure of Europe: Aspects of International Law. Nijhoff, 1991.