Monroe, M. J.; Bokma, F. (2010). "Little evidence for Cope's rule from Bayesian phylogenetic analysis of extant mammals". Journal of Evolutionary Biology. 23 (9). ss. 2017-2021. doi:10.1111/j.1420-9101.2010.02051.x. PMID20629852.
Monroe, M. J.; Bokma, F. (2010). "Little evidence for Cope's rule from Bayesian phylogenetic analysis of extant mammals". Journal of Evolutionary Biology. 23 (9). ss. 2017-2021. doi:10.1111/j.1420-9101.2010.02051.x. PMID20629852.