Analysis of information sources in references of the Wikipedia article "Гебры" in Russian language version.
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(справка). Garthwaite, Gene Ralph (2005), The Persians, Oxford & Carlton: Blackwell Publishing, Ltd., ISBN 978-1-55786-860-2. Duchesne-Guillemin, J. (1983), "Zoroastrian religion". The Cambridge History of Iran, Volume 3(2): The Seleucid, Parthian and Sasanian Periods, Cambridge: Cambridge University Press: In Yarshater, Ehsan, pp. 866—908, ISBN 0-521-24693-8 {{citation}}
: Внешняя ссылка в |title=
(справка).