Analysis of information sources in references of the Wikipedia article "Снежна сова" in Serbian language version.
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(помоћ) „Bubo scandiacus”] Проверите вредност параметра |url=
(помоћ). BirdLife International. The IUCN Red List of Threatened Species. doi:10.2305/IUCN.UK.2016-3.RLTS.T22689055A93216062.en. Приступљено 12. 5. 2018.