《The Languages of China》Published in January 18th, 2008. Authors of 《The Languages of China》 are Sun Hongkai, Hu Zengyi and Huang Xing. More than 80 experts and scholars of writing。
Preface of 《The Languages of China》were wrote by Wang Jun ,Xu Jialu and Jiang Lansheng.
resource:Institute of Ethnology & Anthropology; Chinese Academy of Social Sciences