Mehra Shital Kakkar. (2012). Business Etiquette. Collins Business.
Lua i Stíl Chicago (17ú heag.)Mehra Shital Kakkar. Business Etiquette. Noida: Collins Business, 2012.
Lua MLA (9ú heag.)Mehra Shital Kakkar. Business Etiquette. Collins Business, 2012.
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