Scopoli, Giovanni Antonio „Strix alba“, . Annus I Historico-Naturalis (la). C. G. Hilscheri, 1769 — 21–22-bet.
"White owl" was a name, often used by English ornithologists in the 19th century; see for instance: Jardine, William. Strigidae, or Owls, The naturalist's Library, 1833 — 248-bet.
britishbirds.co.uk
Martin, Jeff.„The daylight activity of barn owls“. BritishBirds. BritishBirds Rarities Committee (2013-yil 8-iyul). 2016-yil 9-sentyabrda asl nusxadan arxivlangan. Qaraldi: 2014-yil 19-iyul.