↑Köhler, G. and E. Lehr (2004) Comments on Euspondylus and Proctoporus (Squamata: Gymnophthalmidae) from Peru, with the description of three new species and a key to the Peruvian species., Herpetologica. 60 (4):501-518
↑ 2.02.1Bisby F.A., Roskov Y.R., Orrell T.M., Nicolson D., Paglinawan L.E., Bailly N., Kirk P.M., Bourgoin T., Baillargeon G., Ouvrard D. (ed.) (2011). "Species 2000 & ITIS Catalogue of Life: 2011 Annual Checklist". Species 2000: Reading, UK. Ginkuhà 24 Septyembre 2012.CS1 maint: multiple names: authors list (link) CS1 maint: extra text: authors list (link)