Title Advertising Age cited the research of marketing professor Valarie Zeithaml, in “Seeking higher ROI? Base strategy on customer equity.” (Sept 07 )  Body Expires   Sort Order 33  Attachments Created at 10/2/2007 11:21 AM  by Redman, Yasmine  Last modified at 10/2/2007 11:22 AM  by Redman, Yasmine  Use this page to add attachments to an item. Name