Hubricht L. (1985). „The distribution of the native land mollusks of the eastern United States“. Fieldiana, Zoology, New Series24: 191 pp. page 14, map on page 96.
books.google.com
Hoagland K. E. & Davis G. M. (1987). „The succineid snail fauna of Chittenango Falls, New York: taxonomic status with comparisons to other relevant taxa“. Proceedings of the Academy of Natural Sciences of Philadelphia139: 465-526.