Hershler, Robert, Frest, T. J., Liu, P., and Johannes, E. J. 2003. "Rissooidean snails from the Pit River basin, California." The Veliger, 46, (4) 275–304.
A systematic review of the hydrobiid snails (Gastropoda: Rissoidea) of the Great Basin, western United States. Part II. Genera Colligyrus, Fluminicola, Pristinicola, and Tryonia
Hershler, Robert and Thompson, F. G. 1992. "A Review of the Aquatic Gastropod Subfamily Cochliopinae (Prosobranchia: Hydrobiidae)." Malacological Review, Supplement, 5 1–140.
Two New Hydrobiid Snails (Amnicolinae) from Florida and Georgia, with a Discussion of the Biogeography of Freshwater Gastropods of South Georgia Streams