DA COSTA GENARO C. (2004). INTERNATIONAL TRADE AND PAYMENTS. HIMALAYA PUBLISHING HOUSE.
Lua i Stíl Chicago (17ú heag.)DA COSTA GENARO C. INTERNATIONAL TRADE AND PAYMENTS. MUMBAI: HIMALAYA PUBLISHING HOUSE, 2004.
Lua MLA (9ú heag.)DA COSTA GENARO C. INTERNATIONAL TRADE AND PAYMENTS. HIMALAYA PUBLISHING HOUSE, 2004.
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