APA (7th ed.) Citation

Verderber, R. F., Sellnow, D. D., & Verderber, K. S.. (2012). The challenge of effective speaking (15th ed.). Wadsworth Cengage Learning.

Chicago Style (17th ed.) Citation

Verderber, Rudolph F., Deanna D. Sellnow, and Kathleen S. Verderber. The Challenge of Effective Speaking. 15th ed. Boston, Massachusetts: Wadsworth Cengage Learning, 2012.

MLA (9th ed.) Citation

Verderber, Rudolph F., et al. The Challenge of Effective Speaking. 15th ed. Wadsworth Cengage Learning, 2012.