Gilje Østensen, Å. (2011). UN Use of Private Military and Security Companies: Practices and Policies. Ubiquity Press.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रGilje Østensen, Åse. UN Use of Private Military and Security Companies: Practices and Policies. London: Ubiquity Press, 2011.
एमएलए (9वां संस्करण) प्रशस्ति पत्रGilje Østensen, Åse. UN Use of Private Military and Security Companies: Practices and Policies. Ubiquity Press, 2011.
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