R. C. Sharma. (2020). Business Correspondence and Report Writing (6th Edition.). Mc Graw Hill India.
Lua i Stíl Chicago (17ú heag.)R. C. Sharma. Business Correspondence and Report Writing. 6th Edition. New Delhi: Mc Graw Hill India, 2020.
Lua MLA (9ú heag.)R. C. Sharma. Business Correspondence and Report Writing. 6th Edition. Mc Graw Hill India, 2020.
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