APA (7 वां संस्करण) प्रशस्ति पत्र
Koops, J. A., Style, H., & Koloriet, L. (2011). The European Union as an integrative power: Assessing the EU's 'effective multilateralism' with NATO and the United Nations. VUBPress.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्र
Koops, Joachim Alexander, Hulshout Style, और Leefdaal Koloriet. The European Union as an Integrative Power: Assessing the EU's 'Effective Multilateralism' with NATO and the United Nations. Brussels, Belgium: VUBPress, 2011.
एमएलए (9वां संस्करण) प्रशस्ति पत्र
Koops, Joachim Alexander, et al. The European Union as an Integrative Power: Assessing the EU's 'Effective Multilateralism' with NATO and the United Nations. VUBPress, 2011.
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