PowerSpeak : the complete guide to persuasive public speaking and presenting / Dorothy Leeds. Leeds, Dorothy. Public speaking. Persuasion (Rhetoric) PN4121 .L364 1988 808.5 19 LEP Includes index. Bibliography: p. 196-202. New York : Prentice Hall Press, c1988. c1988. 1988 Text xxii, 211 p. : eng