(EN) Craig A., Family Buphagidae (Oxpeckers), in del Hoyo J., Elliott A., Christie D. (a cura di), Handbook of the Birds of the World, 14, Bush-shrikes to Old World Sparrows, Barcelona, Lynx Edicions, 2009, pp. 642–653, ISBN978-84-96553-50-7.
(EN) F. Gill e D. Donsker (a cura di), Family Buphagidae, in IOC World Bird Names (ver 9.2), International Ornithologists’ Union, 2019. URL consultato il 15 marzo 2018.