Title: Essentials in Communication Workbook 6 长城汉语：生存交际练习册6
(Great Wall Chinese (Chinese-English Bilingual Edition) 长城汉语 (中、英对照教材))
Author/Editor: Lin Xu, Jianfei Ma, Yue Mao 许琳、马箭飞、毛悦等
ISBN: 7561916272  9787561916278
Publisher: Beijing Language and Culture University Press (2006)
Price: $24.95