BioStor
Tettodrilus friaufi Holt, 1968
 | New genera and species of branchiobdellid worms (Annelida: CHtellata) P C Holt (1968) Proceedings of The Biological Society of Washington 81: 291-318 |
 | Newly Established Families Of The Order Branchiobdellida (Annelida, Clitellata) With A Synopsis Of The Genera P C Holt (1986) Proceedings of The Biological Society of Washington 99: 676-702 |
 | A checklist of and illustrated key to the genera and species of the Central and North American Cambarincolidae (Clitellata: Branchiobdellida) P C Holt and B D Opell (1993) Proceedings of The Biological Society of Washington 106: 251-295 |
 | A Review Of The Taxonomic Nomenclature And A Checklist Of The Species Of The Branchiobdellae (Annelida: Clitellata) Gelder Sr (1996) Proceedings of The Biological Society of Washington 109: 653-663 |