Wang, Feng. 2006. Baiyu zhong songqi cayin de laiyuan [the origin of the aspirated fricatives in Bai]. Mínzú yǔwén \zh{民族语文} 2. 19–23.
@article{jacquesestimative-wang06songqi, author = {Wang, Feng}, journal = {Mínzú yǔwén \zh{民族语文}}, pages = {19–23}, title = {Baiyu zhong songqi cayin de laiyuan [the origin of the aspirated fricatives in Bai]}, volume = {2}, year = {2006} }