Benz, Brett W.; Robbins, Mark B.; Peterson, A. Townsend (2006). ”Evolutionary history of woodpeckers and allies (Aves: Picidae): Placing key taxa on the phylogenetic tree”. Molecular Phylogenetics and Evolution 40 (2): sid. 389–399. doi:10.1016/j.ympev.2006.02.021. PMID 16635580.
nih.gov
ncbi.nlm.nih.gov
Benz, Brett W.; Robbins, Mark B.; Peterson, A. Townsend (2006). ”Evolutionary history of woodpeckers and allies (Aves: Picidae): Placing key taxa on the phylogenetic tree”. Molecular Phylogenetics and Evolution 40 (2): sid. 389–399. doi:10.1016/j.ympev.2006.02.021. PMID 16635580.
