Elagab, O. Y. (1988). The legality of non-forcible counter-measures in international law. Clarendon Press.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रElagab, Omer Yousif. The Legality of Non-forcible Counter-measures in International Law. Oxford: Clarendon Press, 1988.
एमएलए (9वां संस्करण) प्रशस्ति पत्रElagab, Omer Yousif. The Legality of Non-forcible Counter-measures in International Law. Clarendon Press, 1988.
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