Skjærvø, P. O. (2011). The spirit of Zoroastrianism. Yale University Press.
Lua i Stíl Chicago (17ú heag.)Skjærvø, Prods Oktor. The Spirit of Zoroastrianism. New Haven: Yale University Press, 2011.
Lua MLA (8ú heag.)Skjærvø, Prods Oktor. The Spirit of Zoroastrianism. Yale University Press, 2011.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.