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 Style aipamena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 aipamena云中天. 伶牙俐齿——说话的艺术: Art of Speaking. 百花洲文艺出版社, 2006.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.
APA aipamena