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دليل المستخدم
Al Moatazillah، S. H. M. H. (2009). The "Value Proposition" Concept in Marketing How Customers Perceive the Value Delivered by Firms: A Study of Customer Perspectives on Supermarkets in Southampton in the United Kingdom (رسالة ماجستير غير منشورة). University of Southampton، ساوثامبتون. مسترجع من http://search.mandumah.com/Record/688004
Al Moatazillah، Sayed Hassan M. Hassan. "The "Value Proposition" Concept in Marketing How Customers Perceive the Value Delivered By Firms: A Study of Customer Perspectives On Supermarkets in Southampton in the United Kingdom" رسالة ماجستير. University of Southampton، ساوثامبتون، 2009. مسترجع من http://search.mandumah.com/Record/688004