Al Qahtani، W. A.، و Naylar، I. L. (2005). Perception of Healthcare Professionals Management of Pharmaceutical Companies and Member of the Public to Drug Counterfeit Kingdom of Saudi Arabia (رسالة ماجستير غير منشورة). University of Bradford، برادفورد. مسترجع من http://search.mandumah.com/Record/607397
Al Qahtani، Waleed Ali، و Ian L. Naylar. "Perception of Healthcare Professionals Management of Pharmaceutical Companies and Member of the Public to Drug Counterfeit Kingdom of Saudi Arabia" رسالة ماجستير. University of Bradford، برادفورد، 2005. مسترجع من http://search.mandumah.com/Record/607397