APA引文

Keith, W. M., & Lundberg, C. O. (2020). Public speaking: Choices and responsibility (Third edition.). Cengage.

Chicago Style (17th ed.) Citation

Keith, William M., and Christian O. Lundberg. Public Speaking: Choices and Responsibility. Third edition. Boston, MA: Cengage, 2020.

MLA引文

Keith, William M., and Christian O. Lundberg. Public Speaking: Choices and Responsibility. Third edition. Cengage, 2020.