[1] American Psychological Association. Stress: Retrieved on 20 April 2018 from: http://www.apa.org/helpcenter/stress-kinds.aspx
[2] American Addiction Center, & American Addiction Center. (2018, March 19). Top 3 Common Mental Health Challenges among Police Officers. Retrieved from https://medium.com/first-responders/top-3-common-mental-health-challengesamongpolice- officers-110d9f628d5f
[3] Aaron, J. (2000). Stress and coping in police officers. Police Quarterly, 3, 438-450.