Graham Thurgood. 2010. Hainan Cham, Anong, and Eastern Cham: Three languages, three social contexts, three patterns of change. Journal of Language Contact 3.2: 39-61.
Zhāoyánɡ, Shào 邵朝陽 and Yì, Huánɡ 黃翊. 2013. Language situation and language policy in Macao. In Yuming, Li 李宇明 and Wei, Li 李巍 (eds.), The Language Situation in China, Volume 1, 333-350. Berlin, Boston: De Gruyter.
Dong, Xiaobo 董曉波. 2006. 裕固族民族語言使用現狀的人類學調查研究 - 以紅石窩、韭菜溝、喇嘛灣三鄉為例 [Research on Anthropology of actualities of Yugur Language Use illustrated by three villages - Hong Shi Wo, Jiu Cai Gou and La Ma Wan]. Science, Economy, Society 科學、經濟、社會 2006.4:17-20.