1. Accidental Death and Disability: The Neglected Disease of Modern Society Committee on Trauma and Committee on Shock, Division of Medical Sciences, National Academy of Sciences, National Research Council 1966
2. Ambulance Service of NSW. Emergency operations http://www.ambulance.nsw.gov.au/about-us/Emergency-Operations.html
3. Ontario Ministry of Health and Long-Term Care http://www.health.gov.on.ca
4. U.S. Army Medical Department Center and School http://www.cs.amedd.army.mil