↑ 1.01.1Cheung, Johnny (2007) Etymological Dictionary of the Iranian Verb (Leiden Indo-European Etymological Dictionary Series; 2), Leiden, Boston: Brill, →ISBN
↑ 2.02.12.22.32.42.52.6Stilo, Donald (2001) “Gilan x. Languages”, in Encyclopaedia Iranica X[1], New York, pages 660-668
↑ 3.03.13.23.33.43.53.63.7Rezaie Baghbidi, Hasan (1989-) Bojnourdi, Kazem Musavi, editor, The Great Islamic Encyclopedia, volume 10, Tehran: The Center of Great Islamic Encyclopaedia, pages 548-549
^ Borjian, Habib (2004) “Māzandarān: Language and People (The State of Research)”, in Iran & the Caucasus, volume 8, number 2
↑ 6.06.16.26.3Windfuhr, Gernot (2010) The Iranian Languages (Routledge Language Family Series), Oxon, New York: Routledge, →ISBN
↑ 7.07.17.2Rüdiger, Schmitt (2000) Die iranischen Sprachen in Geschichte und Gegenwart [The Iranian Languages Past and Present] (in German), Wiesbaden: Reichert Verlag
↑ 8.08.1Borjian, Habib (2008) “The Extinct Language of Gurgan: Its Sources and Origins”, in Journal of the American Oriental Society
^ Borjian, Habib (2013) “Yushij: A Caspian Dialect of the Central Alborz”, in Persica, volume 24