References

Barker, G.M. and P.C. Mayhill. 1999. Patterns of diversity
     and habitat relationships in terrestrial mollusk
     communities of the Pukeamaru Ecological District,
    northeastern New Zealand. Journal of Biogeography
    26:215-238.

Lee, Y. 2007. Special animal abstract for Vertigo cristata
     (crested vertigo). Michigan Natural Features Inventory,
     Lansing, MI. 4 pp. 

Michigan Natural Features Inventory (MNFI). 2007. Rare Species Explorer
     (Web Application). Available online at
     http://web4.msue.msu.edu/mnfi/explorer [Accessed Mar 31,
     2011].

Nekola, J.C. 2000. Distribution and ecology of Vertigo
     cristata (Sterki, 1919) in the Western Great Lakes
     Region. American Malacological Bulletin 16(1/2):1-6.

Nekola, J.C. 2002. Distribution and ecology of terrestrial
     gastropods in northwestern Minnesota. Final report to
     the natural Heritage and Nongame Research Program,
     Division of Fish and Wildlife, Minnesota Department of
     Natural Resources, St. Paul, Minnesota. 66 pp.

Nekola, J.C. 2003. Large-scale terrestrial gastropod
     community composition patterns in the Great Lakes
     region of North America. Diversity and Distributions.
     9:55-71.

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