Sharma r c. Business Correspondence and Report Writing. Tata McGraw Hill.
Chicago-viite (17. p.)Sharma r c. Business Correspondence and Report Writing. Tata McGraw Hill.
MLA-viite (9. p.)Sharma r c. Business Correspondence and Report Writing. Tata McGraw Hill.
Varoitus: Nämä viitteet eivät aina ole täysin luotettavia.