Sharma r c. Business Correspondence and Report Writing. Tata McGraw Hill.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रSharma r c. Business Correspondence and Report Writing. Tata McGraw Hill.
एमएलए (9वां संस्करण) प्रशस्ति पत्रSharma r c. Business Correspondence and Report Writing. Tata McGraw Hill.
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