Dell, Donald L. Never make the first offer / Donald Dell ; with John Boswell. - New York, N.Y. : Portfolio/Penguin, 2011 - xii, 208 p. ; 22 cm. Includes index. ISBN: 1591843464 (pbk.) 9781591843467 (pbk.) Subjects--Topical Terms: Deals. Dewey Class. No.: 658.4052 / DEL 2011