Elgin, S. (1995). Business Speak. McGraw Hill.
Cita Chicago (17th ed.)Elgin, Suzette. Business Speak. NewYork: McGraw Hill, 1995.
Cita MLA (9th ed.)Elgin, Suzette. Business Speak. McGraw Hill, 1995.
Atenció: Aquestes cites poden no estar 100% correctes.