UNCTAD Secretariat. Trade Relations Among Countries Having Different Economic and Social Systems. Review of trends and policies in trade between countries having different economic and social systems.
শিকাগো স্টাইল (17 তম সংস্করণ) উদ্ধৃতিUNCTAD Secretariat. Trade Relations Among Countries Having Different Economic and Social Systems. Review of Trends and Policies in Trade Between Countries Having Different Economic and Social Systems. Geneva.
M.L.A (9 ম সংস্করণ) উদ্ধৃতিUNCTAD Secretariat. Trade Relations Among Countries Having Different Economic and Social Systems. Review of Trends and Policies in Trade Between Countries Having Different Economic and Social Systems.
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