BioStor
 | Catalogue of birds of the Americas and the adjacent islands in Field Museum of Natural History. 5. Tyrannidae Charles B Hellmayer (1927) Publication. Field Museum of Natural History. Zoological series 13(5): 1-523 |
 | Generic names applied to birds during the years 1916 to 1922, inclusive, with additions to Waterhouse's "Index Generum Avium" Charles W Richmond (1927) Proceedings of The United States National Museum 70(2664): 1-44 |
 | Type-specimens of birds in the British Museum (Natural History). Vol. 3. Systematic index Rachel L M Warren and C J O Harrison (1973) |
 | Systematics and biogeography of the Tyrannid genus Todirostrum and related genera (Aves) J W Fitzpatrick (1976) Bulletin of The Museum of Comparative Zoology 147: 435-463 |
 | A classification of the tyrant flycatchers (Tyrannidae) M A Traylor (1977) Bulletin of The Museum of Comparative Zoology 148: 129-184 |