Cita APA (7th ed.)
Lucas, S. (1983). The art of public speaking. Random House.
Cita Chicago (17th ed.)
Lucas, Stephen. The Art of Public Speaking. New York: Random House, 1983.
Cita MLA (9th ed.)
Lucas, Stephen. The Art of Public Speaking. Random House, 1983.
Atenció: Aquestes cites poden no estar 100% correctes.