Cita APA (7a ed.)

William Keith; Christian O. Lundberg. (2019). Public Speaking: Choices and Responsibility, 3rd Edition (third edition.). Cengage Learning.

Cita Chicago Style (17a ed.)

William Keith; Christian O. Lundberg. Public Speaking: Choices and Responsibility, 3rd Edition. third edition. United States of America: Cengage Learning, 2019.

Cita MLA (8a ed.)

William Keith; Christian O. Lundberg. Public Speaking: Choices and Responsibility, 3rd Edition. third edition. Cengage Learning, 2019.