Verderber, Rudolph F., The challenge of effective speaking in a digital age / Rudolph F. Verderber, Deanna D. Sellnow, Kathleen S. Verderber. - Sixteenth edition. - xx, 369 pages : color illustrations ; 28 cm Includes index Bibliography: pages 346-351 ISBN: 9781285094847 RM649.94 1285094840 Subjects--Topical Terms: Public speaking Dewey Class. No.: 808.51