Kimball, R. T.; Braun, E. L.; Zwartjes, P. W.; Crowe, T. M.; Ligon, J. D. (1999). "A molecular phylogeny of the pheasants and partridges suggests that these lineages are not monophyletic". Molecular Phylogenetics and Evolution. 11 (1): 38–54. doi:10.1006/mpev.1998.0562. PMID10082609.
Kimball, R. T.; Braun, E. L.; Zwartjes, P. W.; Crowe, T. M.; Ligon, J. D. (1999). "A molecular phylogeny of the pheasants and partridges suggests that these lineages are not monophyletic". Molecular Phylogenetics and Evolution. 11 (1): 38–54. doi:10.1006/mpev.1998.0562. PMID10082609.