BioStor
 | Papers from the Harriman Alaska expedition. 9. Entomological results (3): Diptera D W Coquillett (1900) Proceedings of the Washington Academy of Sciences 2: 389-464 |
 | The Crane-Flies (Tipulidae, Diptera) Charles P Alexander (1920) The Ohio Journal of Science 20(6): 193-203 |