Bergman, Brian, Bison Back from Brink of Extinction. Maclean's (16 februari 2004). Gearchiveerd op 9 november 2011. Geraadpleegd op 15 december 2012. "For the sake of lasting peace, let them kill, skin and sell until the buffaloes are exterminated."
Bergman, Brian, Bison Back from Brink of Extinction. Maclean's (16 februari 2004). Gearchiveerd op 9 november 2011. Geraadpleegd op 15 december 2012. "For the sake of lasting peace, let them kill, skin and sell until the buffaloes are exterminated."