• [Wiki] http://en.wikipedia.org/wiki/Gyps_africanus.
• [AnAge] http://genomics.senescence.info/species/entry.php?species=Gyps_africanus.
• [arkive] https://www.arkive.org/white-backed-vulture/gyps-africanus/.
• [Hous1976] Houston, D. C. (1976). Breeding of the white?backed and rüppell's griffon vultures, Gyps africanus and G. rueppellii. Ibis, 118:14--40. doi:10.1111/j.1474-919X.1976.tb02008.x.
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• [Tarb2014] Tarboton, W. (2014). Roberts nests and eggs of southern African birds. Trustees of the John Voelcker Bird Book, Cape Town.