徐为达. (2004). 好口才好办事: Good Speech Helps You Succeed. 当代世界出版社.
Dyfyniad Arddull Chicago徐为达. 好口才好办事: Good Speech Helps You Succeed. 当代世界出版社, 2004.
Dyfyniad MLA徐为达. 好口才好办事: Good Speech Helps You Succeed. 当代世界出版社, 2004.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.