Taxon - Odkazy a literatura
Pachycephala johni Hartert, 1903 Gill F., Donsker D. & Rasmussen P. (eds): IOC World Bird List 11.1 [http://www.worldbirdnames.org/] [jako Pachycephala johni Hartert, E, 1903]Datum citace: 5. prosinec 2021
Clements, J. F.: eBird/Clements checklist of birds of the world 6.7, Cornell Lab of Ornithology [jako Pachycephala griseonota johni]Datum citace: 25. duben 2013