1. Abromeit, J., Norman, Y., Marotta, G., & Chesterton, B. (Eds.). (2015). Transformations of populism in Europe and the Americas: History and recent tendencies. Bloomsbury.
2. Allen, G. E. (2013). “Culling the herd”: Eugenics and the conservation movement in the United States, 1900–1940. Journal of the History of Biology, 46(1), 31–72.
3. American Immigration Council. (2013). The economic blame game: Immigration and unemployment. Immigration Policy Center. Retrieved from https://www.americanimmigrationcouncil.org/sites/default/files/research/economic_blame_game.pdf
4. Armiero, M. (2014). Fascism and nature. Routledge.
5. Bajema, C. J. (1991). Garrett James Hardin: Ecologist, educator, ethicist and environmentalist. Population and Environment, 193–212.