Beresford, P. & Cracraft, J. (1999). Speciation in African forest robins (Stiphrornis): species limits, phylogenetic relationships, and molecular biogeography. American Museum Novitates 3270: 1–22. PDF disponebla.Arkivigite je 2007-06-12 per la retarkivo Wayback Machine
Beresford, P. & Cracraft, J. (1999). Speciation in African forest robins (Stiphrornis): species limits, phylogenetic relationships, and molecular biogeography. American Museum Novitates 3270: 1–22. PDF disponebla.Arkivigite je 2007-06-12 per la retarkivo Wayback Machine