Magoun, A. J., K. F. Abraham, J. E. Thompson, J. C. Ray, M. E. Gauthier, G. S. Brown, G. Woolmer, C. J. Chenier, and F. N. Dawson. “Distribution and relative abundance of caribou in the Hudson Plains Ecozone of Ontario”. Rangifer, vol. 25, no. 4, May 2005, pp. 105-21, doi:10.7557/2.25.4.1776.