Gaya APA

Wenger, A. et al (2008). Origins of the European Security System . USA and Canada: Routledge 2 Park Square, Milton Park, Abingdon, Oxon OX14 4RN.

Gaya MLA

Wenger, Andreas. et al. "Origins of the European Security System". USA and Canada: Routledge 2 Park Square, Milton Park, Abingdon, Oxon OX14 4RN, 2008. Text.