Ringle TechEdge : using computers to present and persuade / William J. Ringle, William D. Thompson. - Boston Allyn & Bacon 1998. - xx, 186p. ill. 21cm - The Essence of public speaking series . Includes bibliographical references ISBN: 020527305X Subjects--Topical Terms: Public speaking Dewey Class. No.: 808.5 RIN 1998