IUCN (International Union for Conservation of Nature) 2008. Cynomys ludovicianus. In: IUCN 2014. The IUCN Red List of Threatened Species. Version 2014.3 http://www.iucnredlist.org (页面存档备份,存于互联网档案馆). Downloaded on 29 January 2015.
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IUCN (International Union for Conservation of Nature) 2008. Cynomys ludovicianus. In: IUCN 2014. The IUCN Red List of Threatened Species. Version 2014.3 http://www.iucnredlist.org (页面存档备份,存于互联网档案馆). Downloaded on 29 January 2015.