Carson, Mitch, 1960- The silent salesmen : guaranteed strategies for increasing sales and profits using promotional products / Mitch Carson. - Hoboken, N.J. : John Wiley & Sons, c2008. - xvii, 280 p. : illustrations ; 25 cm. Includes bibliographical references and index. ISBN: 9780470270356 (cloth) Subjects--Topical Terms: Sales promotion.Marketing. Dewey Class. No.: 658.82/ C321s