References
Cheatum, E. P. and Fullintong R.W. 1971. The recent and pleistocene members of the gastropod family Polygyridae in Texas. The Aquatic and Land Mollusca of Texas 1: 13.
Encyclopedia of Life. <URL: http://eol.org/pages/579332/entries/38940384/details>. Accessed 22 February 2012.
Hickman, C.P., L.S. Roberts, S.L. Keen, A. Larson and D.J. Eisenhour. 2009. Animal Diversity. McGraw Hill, USA.
Hubricht, L. 1962. Eight new species of land snails from the southern United States. The Nautilus 75:26-28.
Hubricht, L. 1985. The distributions of the native land mollusks of the Eastern United States. Chicago: Field Museum of Natural History, Chicago, Illinois, USA.
Jackman, J.A. 2005. <URL: http://insects.tamu.edu/extension/publications/epubs/eee_00026.cfm>. Accessed 6 April 2012.
Johnson, E.H. 2012. <URL:http://www.tshaonline.org/handbook/online/articles/rxe01>. Accessed 28 March 2012.
Myers, P., R. Espinosa, C. S. Parr, T. Jones, G. S. Hammond, and T. A. Dewey. 2012. <URL: http://animaldiversity.ummz.umich.edu/site/accounts/classification/Linisa_tamaulipasensis.html>. Accessed 30 March 2012.
NatureServe. 2011. <URL: http://www.natureserve.org/explorer/ranking.htm#natsub>. Accessed 2 April 2012.
NatureServe. 2012. <URL:http://www.natureserve.org/explorer/servlet/NatureServesearchName=
Linisa+tamaulipasensis>.
Accessed 22 February 2012.
Pilsbry, H. A. 1940. Land Mollusca of North America (North of Mexico). George W. Carpenter Fund for the Encouragement of Original Scientific Research, Philadelphia, Pennsylvania, USA.
Pratt, W. L. J. 1981. A revision of the land snail genus Polygyra in Texas. The University of Arizona. Arizona, USA.
Webb, G. R. 1950. The sexology of Polygyra septemvolva Say, life-history notes, possible utility, and data on stenotrema (Mollusca, Gastopoda, pulmonata, Polygyridae. Transactions of the American Microscopical Society 69: 388-393.
