Bernhardt, Torsten. "Hudson Plains". Canada's Ecozones, Canadian Biodiversity project. McGill University, Redpath Museum. Archived from the original on 4 February 2008. Retrieved 2008-02-01.
Bernhardt, Torsten. "Hudson Plains". Canada's Ecozones, Canadian Biodiversity project. McGill University, Redpath Museum. Archived from the original on 4 February 2008. Retrieved 2008-02-01.