van der Pijl, K. (2007). Nomads, Empires, States: Modes of Foreign Relations and Political Economy, Volume I. Pluto Press.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रvan der Pijl, Kees. Nomads, Empires, States: Modes of Foreign Relations and Political Economy, Volume I. Pluto Press, 2007.
एमएलए (9वां संस्करण) प्रशस्ति पत्रvan der Pijl, Kees. Nomads, Empires, States: Modes of Foreign Relations and Political Economy, Volume I. Pluto Press, 2007.
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