Piaggio, A.J. & Spicer, G.S. (2001). ”Molecular phylogeny of the chipmunks inferred from mitochondrial cytochrome b and cytochrome oxidase II gene sequences”. Molecular Phylogenetics and Evolution 20 (3). doi:10.1006/mpev.2001.0975. PMID 11527462.
Linzey, A.V. & Hammerson, G.) 2008 Tamias umbrinus Från: IUCN 2012. IUCN Red List of Threatened Species. Version 2012.2 <www.iucnredlist.org>. Läst 2 januari 2016.
iucnredlist.org
Linzey, A.V. & Hammerson, G.) 2008 Tamias umbrinus Från: IUCN 2012. IUCN Red List of Threatened Species. Version 2012.2 <www.iucnredlist.org>. Läst 2 januari 2016.
nih.gov
ncbi.nlm.nih.gov
Piaggio, A.J. & Spicer, G.S. (2001). ”Molecular phylogeny of the chipmunks inferred from mitochondrial cytochrome b and cytochrome oxidase II gene sequences”. Molecular Phylogenetics and Evolution 20 (3). doi:10.1006/mpev.2001.0975. PMID 11527462.