Ellis, H. S., & Metzler, L. A. (1949). Readings in the theory of international trade. এবড়ৎমব অষষবহ ধহফ টহরিহ খঃফ..
Chicago Style (17. basım) AtıfEllis, Howard S., ve Lloyd A. Metzler. Readings in the Theory of International Trade. London: এবড়ৎমব অষষবহ ধহফ টহরিহ খঃফ., 1949.
MLA (9th ed.) AtıfEllis, Howard S., ve Lloyd A. Metzler. Readings in the Theory of International Trade. এবড়ৎমব অষষবহ ধহফ টহরিহ খঃফ., 1949.
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