Taxon - Odkazy a literatura
Gill F., Donsker D. & Rasmussen P. (eds): IOC World Bird List 11.1 [http://www.worldbirdnames.org/] [jako Calliope calliope beicki (Meise, 1937)]Datum citace: 22. duben 2021
Gill F., Donsker D. & Rasmussen P. (eds): IOC World Bird List 11.1 [http://www.worldbirdnames.org/] [jako Calliope calliope beicki (Meise, 1937)]