Zuccon, D. & Ericson, P. G. (2012). "Molecular and morphological evidences place the extinct New Zealand endemic Turnagra capensis in the Oriolidae". Molecular Phylogenetics and Evolution. 62 (1): 414–26. doi:10.1016/j.ympev.2011.10.013. PMID22056604.
Zuccon, D. & Ericson, P. G. (2012). "Molecular and morphological evidences place the extinct New Zealand endemic Turnagra capensis in the Oriolidae". Molecular Phylogenetics and Evolution. 62 (1): 414–26. doi:10.1016/j.ympev.2011.10.013. PMID22056604.