The challenge of effective speaking /
Effective speaking.
Rudolph F. Verderber, Deanna D. Sellnow, Kathleen S. Verderber.
- 15th ed.
- Boston, MA: Wadsworth Cengage Learning, 2012.
- xx, 380 p. : col. ill. ; 28 cm.
Includes bibliographical references (p. 326-366) and index.