W. Christopher Wozencraft, "Order Carnivora," Mammal Species of the World, (3rd ed.), Volume 1, Don E. Wilson & DeeAnn M. Reeder (ed.), Johns Hopkins University Press, 2005, Pages 532-628.
Serfass, T., Evans, S.S. & Polechla, P. 2015. Lontra canadensis. The IUCN Red List of Threatened Species 2015: e.T12302A21936349. Downloaded on 06 December 2017.
speciesplus.net
UNEP (2017). Lontra canadensis. The Species+ Website. Nairobi, Kenya. Compiled by UNEP-WCMC, Cambridge, UK. Available at: www.speciesplus.net. (Accessed 06/12/2017)