"Naturalist Dian Fossey Slain at Camp in Rwanda : American Was Expert on Mountain Gorillas; Assailants Hunted". articles.latimes.com. December 29, 1985.
Thomas De Quincey, James Thomas Fields (1854). “De Quincey's Writings: Essays on philosophical writers and other men of letters. 1854-60. [v. 14 stereotyped”, p.103