MURPHY,H A. (2008). EFFECTIVE BUSINESS COMMUNICATION,7TH ED. TATA MCGRAW HILL.
Lua i Stíl Chicago (17ú heag.)MURPHY,H A. EFFECTIVE BUSINESS COMMUNICATION,7TH ED. NEW DELHI: TATA MCGRAW HILL, 2008.
Lua MLA (9ú heag.)MURPHY,H A. EFFECTIVE BUSINESS COMMUNICATION,7TH ED. TATA MCGRAW HILL, 2008.
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