BAAR, D. W. (1980). Communication For Business Professional And Technical Students Dorris W Barr. Wadsworth Publishing Company.
Lua i Stíl Chicago (17ú heag.)BAAR, Doris W. Communication For Business Professional And Technical Students Dorris W Barr. Wadsworth Publishing Company, 1980.
Lua MLA (8ú heag.)BAAR, Doris W. Communication For Business Professional And Technical Students Dorris W Barr. Wadsworth Publishing Company, 1980.
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