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Lua i Stíl Chicago (17ú heag.)Daniel John D. INTERNATIONAL BUSINESS: ENVIRONMENTS AND OPERATIONS. 5TH. NEW DELHI: TATA MCGRAW-HILL PUBLISHING COMPANY LIMITED, 2006.
Lua MLA (9ú heag.)Daniel John D. INTERNATIONAL BUSINESS: ENVIRONMENTS AND OPERATIONS. 5TH. TATA MCGRAW-HILL PUBLISHING COMPANY LIMITED, 2006.
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