[milliondollar]

This is the standard b-school textbook for negotiations class. Very good.

To be clear and in response to other comment, you can't expect everybody to be rational. In my first mock negotiation in that class I got completely hosed. Turns out I totally trusted the other party not to lie. Lesson learned from the b-school *holes.... Part of the class was you have to know your own biases and anticipate some of the other counterparty's.