Taxon - Links and literature
Galli C.: WMSDB - Wolrdwide Mollusc Species Data Base July 10, 2013 [http://www.bagniliggia.it/WMSD/WMSDhome....] [as Drymaeus expansus perenensis Da Costa, 1901]Data retrieved on: 22 November 2013
Galli C.: WMSDB - Wolrdwide Mollusc Species Data Base July 10, 2013 [http://www.bagniliggia.it/WMSD/WMSDhome....] [as Drymaeus expansus perenensis Da Costa, 1901]