- 1 2
"Otus capnodes". IUCN Red List of Threatened Species. Version 2012.2. International Union for Conservation of Nature. Ginkuhà 24 Oktubre 2012.
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- ↑ (1996) , database, NODC Taxonomic Code
- ↑ Peters, James Lee (1945) , Check-list of Birds of the World, vol. 5
- ↑ (2005) , website, Zoonomen - Zoological Nomenclature Resource, 2005.08.07
- 1 2 Bisby F.A., Roskov Y.R., Orrell T.M., Nicolson D., Paglinawan L.E., Bailly N., Kirk P.M., Bourgoin T., Baillargeon G., Ouvrard D. (ed.) (2011). "Species 2000 & ITIS Catalogue of Life: 2011 Annual Checklist". Species 2000: Reading, UK. Ginkuhà 24 Septyembre 2012.CS1 maint: multiple names: authors list (link) CS1 maint: extra text: authors list (link)
- ↑ ITIS: The Integrated Taxonomic Information System. Orrell T. (custodian), 26 Abril 2011
