Goh, David. 40 reasons why you lost that sale / Forty reasons why you lost that sale [David Goh]. - vii, 130 pages : illustrations ; 22 cm. - Self-improvement series for salespersons . - Self-improvement series for salespersons . ISBN: 9679147495 9789679147490 Hadiah Subjects--Topical Terms: Sales personnel.Selling.