I've read a few. Negotiation Genius is probably the most accessible one: http://www.amazon.com/Negotiation-Genius-Obstacles-Brilliant-Bargaining/dp/055380488X

I've read a few. Negotiation Genius is probably the most accessible one: http://www.amazon.com/Negotiation-Genius-Obstacles-Brilliant-Bargaining/dp/055380488X http://www.amazon.com/Negotiation-Genius-Obstacles-Brilliant... Winning Through Intimidation was a fun read, especially if you're into real estate. Apparently the book is worth a lot now (I had no idea, I have an old hardcover version that I don't even see here) http://www.amazon.com/Winning-Through-Intimidation-Robert-Ringer/dp/0449207862/ref=sr_1_1?s=books&ie=UTF8&qid=1327345515&sr=1-1 http://www.amazon.com/Winning-Through-Intimidation-Robert-Ri...