Balassa, B. (1988). Changing Trade Patterns in Manufactured Goods. ELSEVIER.
Lua i Stíl Chicago (17ú heag.)Balassa, B. Changing Trade Patterns in Manufactured Goods. ELSEVIER, 1988.
Lua MLA (8ú heag.)Balassa, B. Changing Trade Patterns in Manufactured Goods. ELSEVIER, 1988.
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