(en) Madge, S. & de Juana, E., 2018. Ethiopian Bushcrow (Zavattariornis stresemanni). In: del Hoyo, J. et al. (eds.). Handbook of the Birds of the World Alive. Lynx Edicions, Barcelona. (retrieved from https://www.hbw.com/node/60757 on 25 November 2018).