Cita APA (7th ed.)
Farrell, T. J., & Farrell, M. M. (1997). Public speaking: Skills for success. Irwin.
Cita Chicago (17th ed.)
Farrell, Thomas J., i Maureen M. Farrell. Public Speaking: Skills for Success. Chicago: Irwin, 1997.
Cita MLA (9th ed.)
Farrell, Thomas J., i Maureen M. Farrell. Public Speaking: Skills for Success. Irwin, 1997.
Atenció: Aquestes cites poden no estar 100% correctes.