John N. Brennan

Consultative Selling Skills: Revised and Updated  John N Brennan Paperback. Createspace Independent Publishing Platform, 2014-04-01 ISBN 9781499174458     Consultive Selling: Close more sales, build trust and improve customer loyalty through consultative sales processes and skills  John N. Brennan Paperback. BookSurge Publishing, 2009-03-04 ISBN 9781439228579