Stilo, Donald L. (2 January 2007). "The Tati language group in the sociolinguistic context of Northwestern Iran and Transcaucasia". Iranian Studies. 14 (3–4): 137–187. doi:10.1080/00210868108701585.
ethnologue.org
"Takestani, a language of Iran". Ethnologue: Languages of the World, 19th Edition. SIL International Publications. Retrieved 28 March 2016.
Takestan can be found at GEOnet Names Server, at this link, by opening the Advanced Search box, entering "-3086741" in the "Unique Feature Id" form, and clicking on "Search Database".