Dean, W. R. J. ., Åhlander, E. . and Johansson, U. S. . (2022) “Avian type localities and the type specimens collected by Johan August Wahlberg in southern Africa”, Zootaxa. Auckland, New Zealand, 5134(4), pp. 521–560. doi: 10.11646/zootaxa.5134.4.3.