U.S. Fish and Wildlife Service. (1992) Recovery Plan for the O’ahu Tree Snails of the Genus Achatinella. U.S. Fish and Wildlife Service, Portland, Oregon, 64 pp. + 64 pp. of appendices + 5 figures. PDF
hawaii.gov
dlnr.hawaii.gov
"Achatinella". Division of Forestry and Wildlife: Native Ecosystems Protection & Management. 2020-12-29. Retrieved 2023-02-27.
Stearns, Beverly Peterson (1999). Watching, from the edge of extinction. S. C. Stearns. New Haven, CT: Yale University Press. ISBN0-585-35104-X. OCLC47011675.