Dpal-ldan-bkra-shis, Keith Slater, et al. (1996). Language Materials of China’s Monguor Minority: Huzhu Mongghul and Minhe Mangghuer. Sino-Platonic papers no. 69.

Georg, Stefan. (2003). Mongghul. In Janhunen, Juha (ed.), "The Mongolic languages", pp. 286-306. London & New York: Routledge.

Endangered Languages of Indigenous Peoples of Siberia

Szakos, Jozsef. 2015. Personal Communication on Tsou (March 24).

Endangered Languages Fund Abstract: "Working to Save Ogiek and Sengwer of Kenya"

Green, Rebecca. 1995. A grammar of Gurr-goni (North Central Arnhem land). Thesis (Ph.D.)--Australian National University, 1995.

Ana Suelly Arruda Câmara Cabral, personal communication, 2015, about Oro Win.

Echeverri, Juan Alvaro (ed.) (2009). Lengua nonuya: Estado de la documentación de la lengua y transcripción y traducción de grabaciones de cuatro hablantes de la lengua. Published online in: Seifart, Frank, Fagua, D., Gasché, J., & J.A. Echeverri (eds.), A multimedia documentation of the languages of the People of the Center. Online publication of transcribed and translated Bora, Ocaina, Nonuya, Resígaro, and Witoto audio and video recordings with linguistic and ethnographic annotations and descriptions. Nijmegen: DOBES-MPI.

Personal communication from Willem Adelaar, 2015, on Tunayana.

Ma, Wei (馬偉). 2009. The situation and the cause of the endangerment of Salar language (撒拉語的瀕危狀況與原因分析). Nationalities Research in Qinghai (青海民族研究) 20.1: 39-50.