APA (7th ed.) Citation

Verderber, R. F. (2012). The challenge of effective speaking (15th ed.). Wadsworth, Cengage Learning.

Chicago Style (17th ed.) Citation

Verderber, Rudolph F. The Challenge of Effective Speaking. 15th ed. Boston, Mass: Wadsworth, Cengage Learning, 2012.

MLA (9th ed.) Citation

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