Waits, L. P.; Talbot, S. L.; Ward, R. H.; Shields, G. F. (2008). Mitochondrial DNA Phylogeography of the North American Brown Bear and Implications for Conservation. Conservation Biology. 12 (2): 408—417. doi:10.1111/j.1523-1739.1998.96351.x. JSTOR2387511.
Waits, L. P.; Talbot, S. L.; Ward, R. H.; Shields, G. F. (2008). Mitochondrial DNA Phylogeography of the North American Brown Bear and Implications for Conservation. Conservation Biology. 12 (2): 408—417. doi:10.1111/j.1523-1739.1998.96351.x. JSTOR2387511.