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|  | Author(s)/Editor(s): | Helgen, K. M., F. R. Cole, L. E. Helgen, and D. E. Wilson |  | 
|  | Publication Date: | 2009 |  | 
|  | Article/Chapter Title: | Generic revision in the Holarctic ground squirrel genus Spermophilus |  | 
|  | Journal/Book Name, Vol. No.: | Journal of Mammalogy, vol. 90, no. 2 |  | 
|  | Page(s): | 270-305 |  | 
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|  | ISBN/ISSN: | 0022-2372 |  | 
|  | Notes: | Available online at http://www.jstor.org/stable/30224475 |  | 
|  | Reference for: | Spermophilus madrensis |  | 
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|  | Author(s)/Editor(s): | Thorington, Richard W., Jr., and Robert S. Hoffman / Wilson, Don E., and DeeAnn M. Reeder, eds. |  | 
|  | Publication Date: | 2005 |  | 
|  | Article/Chapter Title: | Family Sciuridae |  | 
|  | Journal/Book Name, Vol. No.: | Mammal Species of the World: A Taxonomic and Geographic Reference, 3rd ed., vol. 2 |  | 
|  | Page(s): | 754-818 |  | 
|  | Publisher: | Johns Hopkins University Press |  | 
|  | Publication Place: | Baltimore, Maryland, USA |  | 
|  | ISBN/ISSN: | 0-8018-8221-4 |  | 
|  | Notes: |  |  | 
|  | Reference for: | Spermophilus madrensis, Sierra Madre Ground Squirrel [English] |  | 
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|  | Author(s)/Editor(s): | Wilson, Don E., and DeeAnn M. Reeder, eds. |  | 
|  | Publication Date: | 1993 |  | 
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|  | Journal/Book Name, Vol. No.: | Mammal Species of the World: A Taxonomic and Geographic Reference, 2nd ed., 3rd printing |  | 
|  | Page(s): | xviii + 1207 |  | 
|  | Publisher: | Smithsonian Institution Press |  | 
|  | Publication Place: | Washington, DC, USA |  | 
|  | ISBN/ISSN: | 1-56098-217-9 |  | 
|  | Notes: | Corrections were made to text at 3rd printing |  | 
|  | Reference for: | Spermophilus madrensis |  | 
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|  | Author(s)/Editor(s): | Wilson, Don E., and F. Russell Cole |  | 
|  | Publication Date: | 2000 |  | 
|  | Article/Chapter Title: |  |  | 
|  | Journal/Book Name, Vol. No.: | Common Names of Mammals of the World |  | 
|  | Page(s): | xiv + 204 |  | 
|  | Publisher: | Smithsonian Institution Press |  | 
|  | Publication Place: | Washington, DC, USA |  | 
|  | ISBN/ISSN: | 1-56098-383-3 |  | 
|  | Notes: | With contributions by Bernadette N. Graham, Adam P. Potter, and Mariana M. Upmeyer |  | 
|  | Reference for: | Spermophilus madrensis, Sierra Madre Ground Squirrel [English] |  | 
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