BioStor
 | Zoological results of a fifth expedition to East Africa. ll. Birds from Nyasaland and Tete J L Peters and A Loveridge (1953) Bulletin of The Museum of Comparative Zoology 110: 87-139 |
 | Further Data on African Parasitic Cuckoos Herbert Friedmann (1956) Proceedings of The United States National Museum 106: 377-408 |
 | Type-specimens of birds in the British Museum (Natural History). Vol. 2. Passerines Rachel L M Warren and C J O Harrison (1971) |