Nafea، I. T.، و Awan، I. (2007). Performance Evaluation of E-Commerce Systems: Investigation Into the Performance Evaluation of Queue Based Priority Service Scheme for E-Commerce Systems (رسالة ماجستير غير منشورة). University of Bradford، برادفورد. مسترجع من http://search.mandumah.com/Record/600567
Nafea، Ibtehal Talal، و Irfan Awan. "Performance Evaluation of E-Commerce Systems: Investigation Into the Performance Evaluation of Queue Based Priority Service Scheme for E-Commerce Systems" رسالة ماجستير. University of Bradford، برادفورد، 2007. مسترجع من http://search.mandumah.com/Record/600567