Resources

Cookson, Ellen A. 1982. The Comparative Morphology and Histology of the Penial Apparatus in
    Three Pulmonate Gastropod Species. JSTOR 53.2:73-84  

Emberton, K. 1993. Over-Representation of Rare Alleles in Juveniles and Lack of Pattern in
    Geographic Distributions of Alleles in a Land Snail. Malacologia 35.2:361-369.

Nekola, J. C. 2010. Acidophilic Terrestrial Gastropod Communities of North America. Journal
    of Molluscan Studies 76.2:144-156.

Perez, Kathryn E. and Russell L. Minton. 2005. A Systematic Checklist of the Land Snails of
    Louisiana. The Texas Jounal of Science 57.2:xx-xx

Pilsbry, H.A. 1939-1948. Land Mollusca of North America (north of Mexico). Monographs of
    the Academy of Natural Sciences of Philadelphia, 3 (parts 1-4): 2215 pp.

Waggoner et al., 2006. A Survey of Terrestrial Gastropods of the Sipsey Wilderness (Bankhead
    National Forest, Alabama). Southeastern Naturalist 5.1:57-68