Grenoble, L.A.. Language Policy in the Soviet Union (en anglès). Springer Science & Business Media, 2006, p. 80. ISBN 9780306480836 [Consulta: 16 maig 2021]. «The Finno-Ugric languages spoken in the regions around Moscow are on the Finno-Cheremisic branch of the family, which itself divides into two sub-groups, the Cheremisic sub-branch, which includes Low Mari and High Mari, and the Finno-Mordvinic sub-branch, which includes two Mordvinic languages, Moksha and Erzya.»
Ylikoski, Jussi; Aikio, Ante. Sámit, sánit, sátnehámit: riepmočála Pekka Sammallahtii miessemánu 21. beaivve 2007 (en anglès). Suomalais-Ugrilainen Seura, 2007, p. 116. ISBN 9789525150957 [Consulta: 16 maig 2021]. «In the earliest binary tree models (Budenz 1879: 38; Donner 1879: 156; Korhonen 1981: 27; Setälä 1926: 54; Szij 1990: 21-58) Mordvinic was described as an intermediate language between the Finnic languages and the more eastern Uralic languages, whereas the position of Saamic was gradually attached to that of Finnic.»
