Sharma, R. (2011). Business Correspondence and Report Writing (4th.). Tata McGraw Hill.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रSharma, R.C. Business Correspondence and Report Writing. 4th. Tata McGraw Hill, 2011.
एमएलए (9वां संस्करण) प्रशस्ति पत्रSharma, R.C. Business Correspondence and Report Writing. 4th. Tata McGraw Hill, 2011.
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