<!-- This could probably be used as source, but not as external link: [http://timberjay.com/current.php?article=4275 March 2008 sighting near Ely, Mn]-->
* [http://www.rmrs.nau.edu/wildlife/forest_carnivores/wolverine/ Forest Service Wolverine research]
* Patsy, V. and M. Sygo (2009). [http://animaldiversity.ummz.umich.edu/site/accounts/information/Gulo_gulo.html ''Gulo gulo''] Animal Diversity Web, University of Michigan Museum of Zoology.
<small>Accessed 8 September 2012</small>.