(2007). English for international trade: For students specialized in import and export business. Ha Noi: Social larour publishing house.
Chicago-tyylinen lähdeviittausEnglish for International Trade: For Students Specialized in Import and Export Business. Ha Noi: Social larour publishing house, 2007.
MLA-viiteEnglish for International Trade: For Students Specialized in Import and Export Business. Ha Noi: Social larour publishing house, 2007.
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