APPLEYARD, D. R. International economics trade theory policy#Dennis R. Appleyard, Alfred J. Field Jr. McGraw Hill.
Lua i Stíl Chicago (17ú heag.)APPLEYARD, Dennis R. International Economics Trade Theory Policy#Dennis R. Appleyard, Alfred J. Field Jr. McGraw Hill.
Lua MLA (8ú heag.)APPLEYARD, Dennis R. International Economics Trade Theory Policy#Dennis R. Appleyard, Alfred J. Field Jr. McGraw Hill.
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