BioStor
 | The Azygiidae, Hirudmellidae, Ptychogonimidae, Sclerodistomidae and Syncoeliidae (Digenea) of fishes from the northeast Atlantic David I Gibson and Rodney A Bray (1977) Bulletin of the British Museum (Natural History). Zoology 32(6): 167-245 |
 | The Hemiuroidea: terminology, systematics and evolution David Ian Gibson and Rodney Alan Bray (1979) Bulletin of the British Museum (Natural History) Zoology 36(2): 35-146 |