Yuan, Zhongrui. (2008) "国语、普通话、华语Lưu trữ 2009-04-26 tại Wayback Machine (Guoyu, Putonghua, Huayu)". China Language National Language Committee, People's Republic of China
Yuan, Zhongrui. (2008) "国语、普通话、华语Lưu trữ 2009-04-26 tại Wayback Machine (Guoyu, Putonghua, Huayu)". China Language National Language Committee, People's Republic of China