iSpeak improve your speech credibility

iSpeak improve your speech credibility

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Manylion Llyfryddiaeth
Prif Awduron: Nelson, Paul E. (Paul Edward) 1941- (Awdur), Titsworth, Scott (Awdur), Pearson, Judy C. (Awdur)
Fformat: Llyfr
Iaith:English
Cyhoeddwyd: New York, NY McGraw-Hill 2013.
Rhifyn:Fifth edition.
Pynciau:
Public speaking.