Breure, A.S.H. and Borrero, F.J. 2008. An annotated checklist of the land snail family Orthalicidae (Gastropoda: Pulmonata: Orthalicoidea) in Ecuador, with notes on the distribution of the mainland species. Zootaxa. 1768, 1 (May 2008), 1–40. DOI:https://doi.org/10.11646/zootaxa.1768.1.1.