Voss, Christopher, 1942- Never split the difference : negotiating as if your life depended on it / Chris Voss with Tahl Raz. - New York : HarperBusiness, an imprint of HarperCollins Publishers, c2016. - viii, 274 p. ; 17 cm. Includes index ISBN: 9780062872302 Subjects--Topical Terms: Negotiation in business.Negotiation.