Found in 1 comment on Hacker News
SixSigma · 2016-03-16 · Original thread
Everyone Needs a Mentor - David Clutterbuck [1]

Flat Army - Dan Pontefract [2]

[1] http://www.amazon.com/Everyone-Needs-Mentor-David-Clutterbuc...

[2] http://www.danpontefract.com/the-book/

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