West, Barbara A. (19 de mayo de 2010). Encyclopedia of the Peoples of Asia and Oceania(en inglés). Infobase Publishing. p. 357. ISBN9781438119137. «The Kalasha are a unique people living in just three valleys near Chitral, Pakistan... However, it is much more likely, given their Indo-Aryan language, that the religion of the Kalasha is much more closely aligned to the Hinduism of their Indian neighbors that to the religion of Alexander the Great and his armies.»