Rai, U. (1991). Business Communication. Himalaya Publishing House.
Cita Chicago (17th ed.)Rai, U. Business Communication. Mumbai: Himalaya Publishing House, 1991.
Cita MLA (9th ed.)Rai, U. Business Communication. Himalaya Publishing House, 1991.
Atenció: Aquestes cites poden no estar 100% correctes.