Osborn, Michael Public speaking: finding your voice (10th ed) finding your voice Michael Osborn, Suzanne Osborn, Randall Osborn, Kathleen J. Turner - 10th ed Global edition - Harlow: Pearson, 2015 - 476 p. : col. ill. ; 28 cm. Includes bibliographical reference and index ISBN: 1292059982 9781292059983 LC Class. No.: PN4129.15 / .O83 2015