Marston, Cam. Generational selling tactics that work : quick and dirty secrets for selling to any age group / Secrets for selling to any age group Cam Marston. - Hoboken, NJ : John Wiley & Sons, 2011 - xiii, 241 p. : 24 cm. ISBN: 9781118018385 (hbk.) 1118018389 Subjects--Topical Terms: Selling.Age groups. Subjects--Index Terms: Quản lý chung Quản lý tiếp thị Dewey Class. No.: 658.8 / MAR