DOCTOR, R. A. (2006). BUSINESS COMMUNICATION. SHETH PUB.
Cita Chicago (17th ed.)DOCTOR, R A. BUSINESS COMMUNICATION. MUMBAI: SHETH PUB, 2006.
Cita MLA (9th ed.)DOCTOR, R A. BUSINESS COMMUNICATION. SHETH PUB, 2006.
Atenció: Aquestes cites poden no estar 100% correctes.