1. Australian Government. (2022). Qualification details: POL60319—Advanced diploma of police negotiation (release 1). Training.gov.uk. https://training.gov.au/Training/Details/POL60319
2. Baruch, M., & Zarse, N. (2012). Components in a hostage negotiation training curriculum. Journal of Police Crisis Negotiations, 12(1), 39–50. https://doi.org/10.1080/15332586.2012.641438
3. Bohl, N. K. (1992). Hostage negotiator stress. FBI Law Enforcement Bulletin, 61(8), 23–26.
https://ojp.gov/ncjrs/virtual-library/abstracts/hostage-negotiator-stress
4. Canadian Police College. (2022). Crisis negotiators. Canadian Police College. https://www.cpc-ccp.gc.ca/programs-programmes/investigative-enquetes/negotr-negotn-eng.htm
5. College of Policing. (2022). Policing professional profile: Hostage and crisis negotiator. College of Policing. https://profdev.college.police.uk/professional-profile/hostage-and-crisis-negotiator/