Say it Now : A Complete Handbook of Spoken Chinese. - 谭春健 - Tan Chunjian, ....-; 新语言工作室; 毛悦 - Mao Yue, ....-; 马建飞 - Ma Jianfei, ....- (北京 Beijing : 北京语言大学出版社 Beijing Language and Culture University Press, 2007)