Ka nai ji yu yan de tu po quan ji
by Dale Carnegie, Liu hu

Ben shu gong fen wu pian, nei rong bao kuo : gao xiao yan jiang de ji ben yuan ze, yan jiang, yan jiang zhe he ting zhong, shang wu yan jiang shi yong ji qiao, gou tong yi shu, jie shou cheng gong yan jiang de tiao zhan deng.
Kou cai xueTong su dou wu .