Hopkins University Press, 2 vols. (2142 pp.). pp. 286. . NatureServe. (2008). Sorex cinereus. IUCN Red List of Threatened Species. Version 2009.2. International Union for Conservation of Nature. Retrieved 8 February 2010. External links https://web.archive.org/web/20150602041548/http://www.draperwildlife.org/MammalIndexpage/MaskedShrew.html http://animaldiversity.ummz.umich.edu/site/resources/phil_myers/classic/shrew3.jpg/view.html https://www.youtube.com/watch?v=Xim4Q258Mus Sorex Mammals of the United States Mammals described in 1792