^ Mohammad Jalal Abbasi-Shavazi, Peter McDonald, Meimanat Hosseini-Chavoshi, "The Fertility Transition in Iran: Revolution and Reproduction", Springer, 2009. pp 100-101: "The first category is 'Central' where the majority of people are Persian speaking ethnic Fars (provinces of Fars, Hamedan, Isfahan, Markazi, Qazvin, Qom, Semnan, Yazd and Tehran..."
^ Mohammad Jalal Abbasi-Shavazi, Peter McDonald, Meimanat Hosseini-Chavoshi, "Ti Pertilidad a Panaglasat idiay Iran: Rebolusion ken Panagiputot", Springer, 2009. pp 100–101: "Ti umuna a kategoria ket 'Tengnga' a ti kaaduan dagiti tattao ket agsasao ti Persiano nga etniko a Fars (dagiti probinsia iti Fars, Hamedan, Isfahan, Markazi, Qazvin, Qom, Semnan, Yazd ken Tehran..."