Chú thích Ngữ_tộc_Ấn-Iran

    1. ↑ Nordhoff, Sebastian; Hammarström, Harald; Forkel, Robert và đồng nghiệp biên tập (2013). “Indo-Iranian”. Glottolog. Leipzig: Max Planck Institute for Evolutionary Anthropology.  Gợi ý |số biên tập viên= (trợ giúp)
    2. ↑ Numeral Types and Changes Worldwide, by Jadranka (EDT) Gvozdanovic, Language Arts & Disciplines,1999, Page 221. Books.google.com. Truy cập ngày 2 tháng 1 năm 2013. : "The usage of 'Aryan languages' is not to be equated with Indo-Aryan languages, rather Indo-Iranic languages of which Indo-Aryan is a subgrouping."
    3. ↑ Bashir, Elena (2007). Jain, Danesh; Cardona, George, biên tập. The Indo-Aryan languages. tr. 905. ISBN 978-0415772945. 'Dardic' is a geographic cover term for those Northwest Indo-Aryan languages which [..] developed new characteristics different from the IA languages of the Indo-Gangetic plain. Although the Dardic and Nuristani (previously 'Kafiri') languages were formerly grouped together, Morgenstierne (1965) has established that the Dardic languages are Indo-Aryan, and that the Nuristani languages constitute a separate subgroup of Indo-Iranian.