Lesikar, R. (1979). Basic business communication. Richard D Irwin.
Cita Chicago (17th ed.)Lesikar, Raymond. Basic Business Communication. NULL: Richard D Irwin, 1979.
Cita MLA (9th ed.)Lesikar, Raymond. Basic Business Communication. Richard D Irwin, 1979.
Atenció: Aquestes cites poden no estar 100% correctes.