El-Agraa,Ali M. (1983). The theory of international trade. Croom Helm.
Chicago Edition CitationEl-Agraa,Ali M. The Theory of International Trade. London: Croom Helm, 1983.
MLA引文El-Agraa,Ali M. The Theory of International Trade. Croom Helm, 1983.
警告：這些引文格式不一定是100％准確.