Labib، A. (2011). AN EMPIRICAL EXPLORATION TO THE EFFECT OF BUSINESS TYPE OVER CRM CONSTRUCTS: A CASE STUDY CONTRASTING MANUFACTURING AND SERVICE ORGANIZATIONS. المجلة العلمية للاقتصاد والتجارة، ع2 ، 1 - 23. مسترجع من http://search.mandumah.com/Record/664564
Labib، Ashraf. "AN EMPIRICAL EXPLORATION TO THE EFFECT OF BUSINESS TYPE OVER CRM CONSTRUCTS: A CASE STUDY CONTRASTING MANUFACTURING AND SERVICE ORGANIZATIONS." المجلة العلمية للاقتصاد والتجارة ع2 (2011): 1 - 23. مسترجع من http://search.mandumah.com/Record/664564