Cita APA (7th ed.)

Lucas, S. (2015). The art of public speaking (Twelfth edition.). McGraw-Hill Education.

Cita Chicago (17th ed.)

Lucas, Stephen. The Art of Public Speaking. Twelfth edition. New York, NY: McGraw-Hill Education, 2015.

Cita MLA (9th ed.)

Lucas, Stephen. The Art of Public Speaking. Twelfth edition. McGraw-Hill Education, 2015.