Taxon - Odkazy a literatura
poddruh
Ketupa blakistoni doerriesi (Seebohm, 1895)
Gill F., Donsker D. & Rasmussen P. (eds): IOC World Bird List 11.1 [http://www.worldbirdnames.org/] [jako Bubo blakistoni doerriesi Seebohm, 1895]Datum citace: 22. duben 2021
Clements, J. F.: eBird/Clements checklist of birds of the world 6.7, Cornell Lab of Ornithology [jako Ketupa blakistoni doerriesi]Datum citace: 11. duben 2013
Clements, J. F.: eBird/Clements checklist of birds of the world 6.7, Cornell Lab of Ornithology [jako Ketupa blakistoni piscivora]Datum citace: 11. duben 2013