APA (7 वां संस्करण) प्रशस्ति पत्र

SHARMA, R. &. O. (2011). BUSINESS CORRESPONDENCE & REPORT WRITING. TMH.

शिकागो शैली (17वां संस्करण) प्रशस्ति पत्र

SHARMA, R.C. & OTHERS. BUSINESS CORRESPONDENCE & REPORT WRITING. DELHI: TMH, 2011.

एमएलए (9वां संस्करण) प्रशस्ति पत्र

SHARMA, R.C. & OTHERS. BUSINESS CORRESPONDENCE & REPORT WRITING. TMH, 2011.