1. W. R. Ogilvie-Grant, "Catalogue of the birds in the British Museum, vol. 22." (1893)
2. P. J. K. McGowan, "Handbook of the birds of the world." 2, "Family Phasianidae (pheasants and partridges)." 434 (1994)
3. C. W. Benson, R. K. Brooke, R. J. Dowsett, et al. "The birds of Zambia." (1971)
4. D. W. Snow, "An atlas of speciation in African non-passerine birds." (1978)
5. J. del Hoyo and N. J. Collar "HBW and BirdLife International illustrated checklist of the birds of the world." 1, (2014)