云中天. (2006). 伶牙俐齿——说话的艺术: Art of speaking. 百花洲文艺出版社.
Chicago (17e ed.) Bronvermelding云中天. 伶牙俐齿——说话的艺术: Art of Speaking. 百花洲文艺出版社, 2006.
MLA (8e ed.) Bronvermelding云中天. 伶牙俐齿——说话的艺术: Art of Speaking. 百花洲文艺出版社, 2006.
Let op: Deze citaties zijn niet altijd 100% accuraat.