Al Ajaji، S. A. A.، و Ashayeri، N. (2002). Patient Perception Survey conducted in the Dental Department of Security Forces Hospital, Riyadh City, Saudi Arabia (رسالة دكتوراه غير منشورة). Boston University، بوسطن. مسترجع من http://search.mandumah.com/Record/612495
Al Ajaji، Saud Abd Alrahman، و Nargess Ashayeri. "Patient Perception Survey Conducted in the Dental Department of Security Forces Hospital, Riyadh City, Saudi Arabia" رسالة دكتوراه. Boston University، بوسطن، 2002. مسترجع من http://search.mandumah.com/Record/612495