1. The narrative study of Hmong ancient songs Author(s): Wu, Yi Wen Format: Thesis Publisher: Ann Arbor : Wuhan University (People's Republic of China), 2010.
2. Study of hmong of songtao daxing town in guizhou province Author(s): Chen, Hong Format: Thesis Publisher: Ann Arbor : Nankai University (People's Republic of China), 2009.