Lessona, M.; Pollonera, C. (1882). Monografia dei limacidi italiani. Torino: Ermanno Loescher. p. 69. Retrieved 11 January 2025.{{cite book}}: CS1 maint: multiple names: authors list (link) This article incorporates text from this source, which is in the public domain.
Hutchinson, John M.C.; Reise, Heike; Schlitt, Bettina (7 July 2022). "Will the real Limax nyctelius please step forward: Lehmannia, Ambigolimax, or Malacolimax? No, Letourneuxia!". Archiv für Molluskenkunde International Journal of Malacology. 151 (1): 19–41. doi:10.1127/arch.moll/151/019-041.