Nordhoff, Sebastian; Hammarström, Harald; Forkel, Robert; Haspelmath, Martin biên tập (2013). “Yiddish”. Glottolog. Leipzig: Max Planck Institute for Evolutionary Anthropology.
Matras, Yaron. "Archive of Endangered and Smaller Languages: Yiddish". University of Manchester. humanities.manchester.ac.uk. Matres explains that with the emigration of Jews eastward into Slavic-speaking areas of Central Europe, from around the twelfth century on, Yiddish "took on an independent development path", adding: "It was only in this context that Jews began to refer to their language as 'Yiddish' (= 'Jewish'), while earlier it had been referred to as 'Yiddish-Taitsh' (='Judeo-German')."
