Haberler, G. V. (1936). The theory of international trade. London: William Hodge.
Trích dẫn kiểu ChicagoHaberler, Gottfried Von. The Theory of International Trade. London: William Hodge, 1936.
MLA引文Haberler, Gottfried Von. The Theory of International Trade. London: William Hodge, 1936.
警告：这些引文格式不一定是100％准确.