1. A. Hopkins, Lessons from Longford, CCH Australia Limited, Australia, 2000, ISBN 1 86468 422 4.
2. Cullen, The Public Inquiry into the Piper Alpha Disaster, HMSO Publication, United Kingdom, 1990, ISBN 0 10 113102.
3. D. Vaughan, The Challenger Launch Decision: Risky Technology, Culture and Deviance at NASA, University of Chicago Press, London, 1996.
4. NASA, 2003, http://www.nasa.gov/columbia/.
5. NOU, Hurtigbåten MS Sleipners forlis 26 November 1999, Justisdepartementet, vol. 31, 2000.