(en) Maureen Enns, Wild Horses, Wild Wolves : Legends at Risk at the Foot of the Canadian Rockies, Rocky Mountain Books Ltd, , 224 p. (ISBN978-1-927330-23-4, lire en ligne), p. 207-211.
(en) John W. Turner, Jr. et Michael L. Morrison, « Influence of Predation by Mountain Lions on Numbers and Survivorship of a Feral Horse Population », The Southwestern Naturalist, vol. 46, no 2, , p. 183-190 (JSTOR3672527).
Porter et al. 2016, p. 432. [Porter et al. 2016] (en) Valerie Porter, Lawrence Alderson, Stephen J. G. Hall et Dan Phillip Sponenberg, Mason's World Encyclopedia of Livestock Breeds and Breeding, CAB International, , 6e éd., 1 107 p. (ISBN1-84593-466-0, OCLC948839453)..
wildhorsepreservation.org
(en) « Our history and mission », sur The American Wild Horse Preservation Campaign (consulté le )
Porter et al. 2016, p. 432. [Porter et al. 2016] (en) Valerie Porter, Lawrence Alderson, Stephen J. G. Hall et Dan Phillip Sponenberg, Mason's World Encyclopedia of Livestock Breeds and Breeding, CAB International, , 6e éd., 1 107 p. (ISBN1-84593-466-0, OCLC948839453)..