Cao, Zhiyun 曹志耘 (ed.) 2008. 汉语方言地图集 [Linguistic atlas of Chinese dialects]. Beijing: The Commercial Press.
@book{siniticbetween-Cao2008,
address = {Beijing},
editor = {Cao, Zhiyun 曹志耘},
publisher = {The Commercial Press},
title = {汉语方言地图集 [Linguistic atlas of Chinese dialects]},
year = {2008}
}