APA (7th ed.) Citation

Verderber, R. F., Sellnow, D. D., & Verderber, K. S. 1. (2018). The Challenge of effective speaking: In a digital age (17th edition.). Cengage Learning.

Chicago Style (17th ed.) Citation

Verderber, Rudolph F., Deanna D. Sellnow, and Kathleen S. 1949 Verderber. The Challenge of Effective Speaking: In a Digital Age. 17th edition. Boston, MA: Cengage Learning, 2018.

MLA (9th ed.) Citation

Verderber, Rudolph F., et al. The Challenge of Effective Speaking: In a Digital Age. 17th edition. Cengage Learning, 2018.