Ken Schwaber gives lots of case studies in this. He is not afraid to use his own mistakes as examples to highlight the fact that scrum is a learning process.
I liked the 'Scrum is art of the possible' sound bite.
He uses case studies grouped by theme to illustrate proper use of scrum practices topped off with a series of lessons learned sections to nail his points down.
Reviews: Bookshelved, WikiWiki
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