^R.N Frye, "IRAN v. PEOPLES OF IRAN" in Encyclopædia Iranica. "In the following discussion of “Iranian peoples,” the term “Iranian” may be understood in two ways. It is, first of all, a linguistic classification, intended to designate any society which inherited or adopted, and transmitted, an Iranian language. The set of Iranian-speaking peoples is thus considered a kind of unity, in spite of their distinct lineage identities plus all the factors which may have further differentiated any one group’s sense of self."
^J. Harmatta in "History of Civilizations of Central Asia", Chapter 14, The Emergence of Indo-Iranians: The Indo-Iranian Languages, ed. by A. H. Dani & V.N. Masson, 1999, p. 357
^Frye, Richard Nelson, Greater Iran, ISBN1-56859-177-2, en Parameter error in {{ISBN}}: Invalid ISBN. p.xi: "... Iran means all lands and peoples where Iranian languages were and are spoken, and where in the past, multi-faceted Iranian cultures existed...."
