MMM is a good book, but I like to suggest Weinberg's The Psychology of Computer Programming as another contemporary (to it) take that discusses both how to examine what's happening in teams (effective or not) and what was observed in some teams (effective and not). Like MMM, it received an update later on. Weinberg left his original text essentially intact (I think light changes to address errors in the printing, not changes to what was written though) and added commentary to each chapter instead of editorializing them directly.
