徐为达. (2004). 好口才好办事: Good Speech Helps You Succeed. 当代世界出版社.
Chicago Style aipamena徐为达. 好口才好办事: Good Speech Helps You Succeed. 当代世界出版社, 2004.
MLA aipamena徐为达. 好口才好办事: Good Speech Helps You Succeed. 当代世界出版社, 2004.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.