Recommended links about retrospectives

Who Destroyed Three Mile Island? [video]
Nickolas Means tells a very compelling story about the power of investigating what caused an accident rather than looking for who to blame
Moving from Blame to Accountability [article]
Marilyn Paul provide a much more detailed account of the value of shifting away from blame and the ways that you can support this
Learning through blameless reviews [video]
I talk about how blameless retrospectives help your team learn
Blame [video]
Brené Brown's short on what blame is and why you should give it up
Retrospectives [video]
Jessie Link shares some different types of retrospectives you can run and also some good general advice on running them
Project Retrospectives: A Handbook For Team Reviews by Norman L. Kerth [book]
The source of the prime directive of retrospectives