Verderber, Rudolph F., The challenge of effective speaking in a digital age / Rudolph F. Verderber, Deanna D. Sellnow, Kathleen S. Verderber. - Eighteenth edition. - 1 online resource (xx, 340 pages) : color illustrations ; 28 cm Includes bibliographical references and index. ISBN: 9780357798782 9780357798799 Subjects--Topical Terms: Public speaking. LC Class. No.: PN4121 / .V47 2024 Dewey Class. No.: 808.51