W. J.  Cody and Porsild, A. E., ?Additions to the flora of continental Northwest Territories, Canada?, The Canadian-Field Naturalist, vol. 82, pp. 263-275, 1968.

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.