1. Austin, John L. 1962. How to Do Things With Words. Oxford: Oxford University Press.
2. Boonman-Berson, Susan. 2016. Blurred boundaries in wildlife management practices. In Animal Ethics in the Age of Humans: Blurring Boundaries in Human-Animal Relationships, ed. Bovenkerk Bernice, and Jozef Keulartz, 203–223. Berlin: Springer International Publishing.
3. Cooper, David E. 2003. Meaning. Chesham: Acumen.
4. Douglas, Mary. 1991. The idea of a home: A kind of space. Social Research 58 (1): 287–307.
5. Edward, Abbey. 1971. Desert Solitaire. A season in the Wilderness. New York: Ballantine Books.