ELLSWORTH. (1964). The international economy - Ellsworth. The Macmillan Company.
Lua i Stíl Chicago (17ú heag.)ELLSWORTH. The International Economy - Ellsworth. The Macmillan Company, 1964.
Lua MLA (8ú heag.)ELLSWORTH. The International Economy - Ellsworth. The Macmillan Company, 1964.
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