Template:Villalobos, Ribera & Downie, 1999
- Villalobos, C., Ribera, I. & Downie, I.S. 1999. Hairworms found in Scottish agricultural land, with descriptions of two new species of Gordionus Müller (Nematomorpha: Gordiidae). Journal of Natural History 33(12): 1767–1780. DOI: 10.1080/002229399299716