A. E.  Porsild and Cody, W. J., Checklist of the vascular plants of continental Northwest Territories, Canada. Ottawa: Plant Research Institute, Canada Department of Agriculture, 1968, p. 102.

A. E.  Porsild and Cody, W. J., Vascular plants of continental Northwest Territories, Canada. Ottawa, Canada: National Museum of Canada, 1980.

A. E.  Porsild and Cody, W. J., Vascular Plants of Continental Northwest Territories, Canada. Ottawa: National Museums of Canada, 1980.

W. J.  Cody, Flora of the Yukon Territory, Second Edition. Ottawa: NRC Research Press, 2000, p. 669.