Jena: Max Planck Institute for the Science of Human History. 2016. 土族语的Glottopedia條目. Slater, Keith W. A Grammar of Mangghuer: A Mongolic Language of China's
Jena: Max Planck Institute for the Science of Human History. 2016. 車臣語的Glottopedia條目. UNESCO Atlas of the World's Languages in danger, UNESCO 車臣共和國憲法, 第10