Παραπομπή APA

Peterson, J., & Shackleton, M. (2002). The institutions of the European Union.

Παραπομπή Chicago Style

Peterson, John, και Michael Shackleton. The Institutions of the European Union. Oxford, Oxford University Press, 2002.

Παραπομπή MLA

Peterson, John, και Michael Shackleton. The Institutions of the European Union. 2002.