DOCTOR, R. A. (2006). BUSINESS COMMUNICATION. SHETH PUB.
Lua i Stíl Chicago (17ú heag.)DOCTOR, R A. BUSINESS COMMUNICATION. MUMBAI: SHETH PUB, 2006.
Lua MLA (9ú heag.)DOCTOR, R A. BUSINESS COMMUNICATION. SHETH PUB, 2006.
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