Sharma, R. (2011). Business Correspondence and Report Writing (4th.). Tata McGraw Hill.
Lua i Stíl Chicago (17ú heag.)Sharma, R.C. Business Correspondence and Report Writing. 4th. Tata McGraw Hill, 2011.
Lua MLA (9ú heag.)Sharma, R.C. Business Correspondence and Report Writing. 4th. Tata McGraw Hill, 2011.
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