Madhukar R K. (2007). Business Communication. Vikas Publishing.
Citazione stile Chigago Style (17a edizione)Madhukar R K. Business Communication. Noida: Vikas Publishing, 2007.
Citatione MLA (9a ed.)Madhukar R K. Business Communication. Vikas Publishing, 2007.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.