Influence without authority - Allan R. Cohen

In organizations today, getting work done requires political and collaborative skills. That's why the first edition of this book has been widely adopted as a guide for consultants, project leaders, staff experts, and anyone else who does not have direct authority but who is nevertheless accountable for results. In this revised edition, leadership gurus Allan Cohen and David Bradford explain how to get cooperation from those over whom you have no official authority by offering them help in the form of the currencies they value. This classic work, now revised and updated, gives you powerful techniques for cutting through interpersonal and interdepartmental barriers, and motivating people to lend you their support, time, and resources.