Cita APA (7th ed.)

LUCAS, S. E. (1989). The art of public speaking.-- Ed.3. McGraw-Hill Pub.

Cita Chicago (17th ed.)

LUCAS, Stephen E. The Art of Public Speaking.-- Ed.3. New York: McGraw-Hill Pub, 1989.

Cita MLA (9th ed.)

LUCAS, Stephen E. The Art of Public Speaking.-- Ed.3. McGraw-Hill Pub, 1989.