1. BBC Edward Snowden: leaks that exposed US spy programme 2014 http://www.bbc.com/news/world-us-canada-23123964
2. Chakrabarti S Let me be clear - Edward Snowden is a hero 2015 http://www.theguardian.com/commentisfree/2015/jun/14/edward-snowden-hero-government-scare-tactics
3. Keck C Yes, Edward Snowden is a traitor 2013 http://thediplomat.com/2013/12/yes-edward-snowden-is-a-traitor/
4. Francis R Freedom to speak up: an independent review into creating an open and honest reporting culture in the NHS 2015 http://webarchive.nationalarchives.gov.uk/20150218150343/https://freedomtospeakup.org.uk/wp-content/uploads/2014/07/F2SU_web.pdf
5. Three Australian whistleblowing sagas: lessons for internal and external regulation;Faunce;Med J Aust,2004