Al Rajhi، S. A.، و Woodward، P. R. (1991). The Gulf Cooperation Council States: The Manifold Threats and the Search for Security and Stability Maintenance in the Gulf and Arabian Peninsula (رسالة دكتوراه غير منشورة). University of Reading، ريدنج. مسترجع من http://search.mandumah.com/Record/602933
Al Rajhi، Saleh Abdullah، و Peter R. Woodward. "The Gulf Cooperation Council States: The Manifold Threats and the Search for Security and Stability Maintenance in the Gulf and Arabian Peninsula" رسالة دكتوراه. University of Reading، ريدنج، 1991. مسترجع من http://search.mandumah.com/Record/602933