BioStor
 | Thirteenth Supplement to the American Ornithologists' Union Check-List of North American Birds (1904) The Auk 21: 411-424 |
 | Notes on birds of the Guatemalan Highlands Alexander Wetmore (1941) Proceedings of The United States National Museum 89: 523-581 |
 | Type-specimens of birds in the British Museum (Natural History). Vol. 3. Systematic index Rachel L M Warren and C J O Harrison (1973) |