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Skjærvø, Prods Oktor (2005). "Introduction to Zoroastrianism"(PDF). Iranian Studies at Harvard University. Diarsipkan dari versi asli(PDF) tanggal 2021-12-24. Diakses tanggal 2022-02-09.
Skjærvø, Prods Oktor (2005). "Introduction to Zoroastrianism"(PDF). Iranian Studies at Harvard University. Diarsipkan dari versi asli(PDF) tanggal 2021-12-24. Diakses tanggal 2022-02-09.