Template:Sims & Easton, 1972
- Sims, R.W. & Easton, E.G. 1972. A numerical revision of the earthworm genus Pheretima auct. (Megascolecidae: Oligochaeta) with the recognition of new genera and an appendix on the earthworms collected by the Royal Society North Borneo Expedition. Biological Journal of the Linnean Society 4(3): 169–268. DOI: 10.1111/j.1095-8312.1972.tb00694.x.