Putnam, R. D. (2000). Bowling alone: The collapse and revival of American community. Simon and Schuster.
World Health Organization. (2018). Physical activity. Retrieved from https://www.who.int/news-room/fact-sheets/detail/physical-activity
Farrrell, C., & L. M. (2017). Fear of crime and the environment. Journal of Environmental Psychology, 51, 230-239.
Kaplan, S. (1995). The restorative benefits of nature: Toward an integrative framework. Journal of Environmental Psychology, 15(3), 169-182.