Sharma, R. (2002). Business correspondence and report writing- 3rd ed (3rd.).
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रSharma, R. Business Correspondence and Report Writing- 3rd Ed. 3rd. New Delhi, 2002.
एमएलए (9वां संस्करण) प्रशस्ति पत्रSharma, R. Business Correspondence and Report Writing- 3rd Ed. 3rd. 2002.
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