^H. Pilkington,"Islam in Post-Soviet Russia", Psychology Press, Nov 27, 2002 . pg 27:
"Among other indigenous peoples of Iranian origin were the Tats, the Talishes and the Kurds"
^R. Khanam,"Encyclopaedic Ethnography of Middle-East and Central Asia:P-Z, Volume 1", Global Vision Publishing Ho, 2005. pg 746:"The contemporary Tats are the descendants of an Iranian-speaking population sent out of Persia by the dynasty of the Sasanids in the fifth to sixth centuries."
^T. M. Masti︠u︡gina, Lev Perepelkin, Vitaliĭ Vi͡a︡cheslavovich Naumkin, "An Ethnic History of Russia: Pre-Revolutionary Times to the Present", Greenwood Publishing Group, 1996 . pg 80:""The Iranian Peoples (Ossetians, Tajiks, Tats, Mountain Judaists)"
^Gruenberg, Alexander. (1966). "Tatskij jazyk". In: Vinogradov, V. V. (ed.), Jazyki narodov SSSR. Volume 1: Indoevropejskie jazyki, 281-301. Excerpt: "The Tat language belongs to the Southwest group of Iranian languages and is close in its grammatical structure and lexical content to the Persian and Tajik languages."
^Authier, Gilles (2012). Grammaire juhuri, ou judéo-tat, langue iranienne des Juifs du Caucase de l'est. Wiesbaden: Reichert. Excerpt: "Judaeo-Tat has no particular affinity with the Persian varieties, spoken until recently by Jews of Bukhara, Yazd, Isfahan, Kerman, Hamadan, Kashan, and Nahavand. Contrary to these, Judaeo-Tat is a different language which is not intelligible with Standard Persian."