Jadranka Gvozdanović (1999). Numeral Types and Changes Worldwide. Walter de Gruyter. hlm. 221. ISBN978-3-11-016113-7.: "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."
CIA- The World Factbook: 14.7 million in Turkey (18%)[1][Verifikasi gagal], 4.9–6.5 million in Iraq (15-20%)[2][Verifikasi gagal], 8 million in Iran (10%)"Archived copy". Diakses tanggal 31 Maret 2011.[Verifikasi gagal] (all for 2014), plus several million in Syria, neighboring countries, and the diaspora
CIA- The World Factbook: 14.7 million in Turkey (18%)[1][Verifikasi gagal], 4.9–6.5 million in Iraq (15-20%)[2][Verifikasi gagal], 8 million in Iran (10%)"Archived copy". Diakses tanggal 31 Maret 2011.[Verifikasi gagal] (all for 2014), plus several million in Syria, neighboring countries, and the diaspora