Al Sultan، F. M.، و Kraetzschmar، H. (2011). Between Conflict and Rapprochement: The Development of Saudi-Iranian Relations Since 1989 (رسالة دكتوراه غير منشورة). University of Leeds، ليدز. مسترجع من http://search.mandumah.com/Record/607573
Al Sultan، Fahad Mohammad، و Hendrik Kraetzschmar. "Between Conflict and Rapprochement: The Development of Saudi-Iranian Relations Since 1989" رسالة دكتوراه. University of Leeds، ليدز، 2011. مسترجع من http://search.mandumah.com/Record/607573