Consultative Selling
by Mack Hanan,etc.
ISBN 13: 9780814450130
Format: Hardcover (272 pages) Publisher: Amacom Published: Dec 1990 Other Format: Hardcover
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Sales Shock!: The End of Selling Products/The Rise of CoManaging Customers
by Mack Hanan
ISBN 13: 9780814402481
Format: Hardcover (176 pages) Publisher: Amacom Published: 01 Feb 1996
ISBN 13: 9780814405031
Format: Hardcover (250 pages) Publisher: Amacom Published: 30 May 1999