APA-ийн эшлэл(7 дахь хэвлэлт)

Sharma, R. (2002). Business correspondence and report writing- 3rd ed (3rd.).

Чикаго-гийн эшлэл (17 дахь хэвлэлт)

Sharma, R. Business Correspondence and Report Writing- 3rd Ed. 3rd. New Delhi, 2002.

MLA -ийн эшлэл (9 дэх хэвлэлт)

Sharma, R. Business Correspondence and Report Writing- 3rd Ed. 3rd. 2002.