Kaul, A. Effective Business Communication. Prentice Hall of India (Pvt. Ltd.).
Lua i Stíl Chicago (17ú heag.)Kaul, Asha. Effective Business Communication. New Delhi New Delhi: Prentice Hall of India (Pvt. Ltd.).
Lua MLA (9ú heag.)Kaul, Asha. Effective Business Communication. Prentice Hall of India (Pvt. Ltd.).
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