Cita APA (7th ed.)
Steil, L. K., & Barker, L. L. (1983). Effective listening: Key to your success. Addison-Wesley.
Cita Chicago (17th ed.)
Steil, Lyman K., i Larry Lee Barker. Effective Listening: Key to Your Success. Massachusetts: Addison-Wesley, 1983.
Cita MLA (9th ed.)
Steil, Lyman K., i Larry Lee Barker. Effective Listening: Key to Your Success. Addison-Wesley, 1983.
Atenció: Aquestes cites poden no estar 100% correctes.