Elagab, O. Y. (1988). The legality of non-forcible counter-measures in international law. Clarendon Press.
芝加哥风格引文Elagab, Omer Yousif. The Legality of Non-forcible Counter-measures in International Law. Oxford: Clarendon Press, 1988.
MLA引文Elagab, Omer Yousif. The Legality of Non-forcible Counter-measures in International Law. Clarendon Press, 1988.
警告：这些引文格式不一定是100％准确.