Cellich, C. (2004). Global business negotiationsa practical guide. Thomson South-Western.
Lua i Stíl Chicago (17ú heag.)Cellich, Claude. Global Business Negotiationsa Practical Guide. Thomson South-Western, 2004.
Lua MLA (8ú heag.)Cellich, Claude. Global Business Negotiationsa Practical Guide. Thomson South-Western, 2004.
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