M. P.  Kerney and Cameron, R. A. D., Land Snails of Britain and North-West Europe. Hong Kong: Harper Collins Publishers, 1979.

A.  Wiktor, Chen, D. N., and Wu, M., ?Stylommatophoran slugs of China (Gastropoda: Pulmonata) ? Prodromus?, Folia Malacologia, vol. 8, pp. 3-35, 2000.

A.  Wiktor, Chen, D. N., and Wu, M., ?Stylommatophoran slugs of China (Gastropoda: Pulmonata) ? Prodromus?, Folia Malacologia, vol. 8, pp. 3?35, 2000.

A.  Sysoev and Schileyko, A., Land Snails and Slugs of Russia and Adjacent Countries. Sofia: Pensoft, 2009.