Goodall, J., & Bekoff, M. (2003). The ten trusts: What we must do to care for the animals we love. New York: HarperCollins World.
Juniper, T. (2019). The ecology book. NY, NY: DK Publishing.
King, G. (2012, July 17). Where the Buffalo No Longer Roamed. Retrieved from https://www.smithsonianmag.com/history/where-the-buffalo-no-longer-roamed-3067904/