A. R.  Mead, ?Revision of the giant west coast land slugs of the genus Ariolimax Moerch (Pulmonata: Arionidae)?, The American Midland Naturalist, vol. 30, pp. 675-717, 1943.

W. P.  Leonard, Richart, C. H., Pearce, T. A., and Hohenlohe, P. A., ?Identification Guide to Land Snails and Slugs of Western Washington?, 2004.